diff --git a/crates/app/src/api.rs b/crates/app/src/api.rs
index d0ff1dd0..39902a89 100644
--- a/crates/app/src/api.rs
+++ b/crates/app/src/api.rs
@@ -112,3 +112,10 @@ impl AppCommand {
         //Ok(None)
     //}
 }
+
+dsl!(ClockCommand:       |self: App, iter|self.clock().take(iter));
+dsl!(MidiEditCommand:    |self: App, iter|Ok(self.editor().map(|x|x.take(iter)).transpose()?.flatten()));
+dsl!(PoolCommand:        |self: App, iter|self.pool.take(iter));
+dsl!(SamplerCommand:     |self: App, iter|Ok(self.project.sampler().map(|x|x.take(iter)).transpose()?.flatten()));
+dsl!(ArrangementCommand: |self: App, iter|self.project.take(iter));
+dsl!(DialogCommand:      |self: App, iter|Dsl::take(&self.dialog, iter));
diff --git a/crates/app/src/model.rs b/crates/app/src/model.rs
index e81da8da..f90f5978 100644
--- a/crates/app/src/model.rs
+++ b/crates/app/src/model.rs
@@ -33,8 +33,8 @@ has!(Option<Dialog>:     |self: App|self.dialog);
 has!(Clock:              |self: App|self.project.clock);
 has!(Option<MidiEditor>: |self: App|self.project.editor);
 has!(Selection:          |self: App|self.project.selection);
-has!(Vec<MidiInput>:    |self: App|self.project.midi_ins);
-has!(Vec<MidiOutput>:   |self: App|self.project.midi_outs);
+has!(Vec<JackMidiIn>:    |self: App|self.project.midi_ins);
+has!(Vec<JackMidiOut>:   |self: App|self.project.midi_outs);
 has!(Vec<Scene>:         |self: App|self.project.scenes);
 has!(Vec<Track>:         |self: App|self.project.tracks);
 has!(Measure<TuiOut>:    |self: App|self.size);
@@ -54,18 +54,6 @@ has_clips!(|self: App|self.pool.clips);
 impl HasClipsSize for App {
     fn clips_size (&self) -> &Measure<TuiOut> { &self.project.inner_size }
 }
-from_dsl!(ClockCommand:
-    |state: App, iter|FromDsl::take_from(state.clock(), iter));
-from_dsl!(MidiEditCommand:
-    |state: App, iter|Ok(state.editor().map(|x|FromDsl::take_from(x, iter)).transpose()?.flatten()));
-from_dsl!(PoolCommand:
-    |state: App, iter|FromDsl::take_from(&state.pool, iter));
-from_dsl!(SamplerCommand:
-    |state: App, iter|Ok(state.project.sampler().map(|x|FromDsl::take_from(x, iter)).transpose()?.flatten()));
-from_dsl!(ArrangementCommand:
-    |state: App, iter|FromDsl::take_from(&state.project, iter));
-from_dsl!(DialogCommand:
-    |state: App, iter|FromDsl::take_from(&state.dialog, iter));
 //has_editor!(|self: App|{
     //editor = self.editor;
     //editor_w = {
@@ -344,7 +332,7 @@ pub struct Configuration {
     /// View definition
     pub view: TokenIter<'static>,
     // Input keymap
-    pub keys: InputMap<'static, App, AppCommand, TuiIn, TokenIter<'static>>,
+    pub keys: InputMap<App, AppCommand, TuiIn, TokenIter<'static>>,
 }
 
 impl Configuration {
@@ -418,7 +406,7 @@ impl Configuration {
     }
 
     fn parse_keys (base: &impl AsRef<Path>, iter: Option<TokenIter<'static>>)
-        -> Usually<InputMap<'static, App, AppCommand, TuiIn, TokenIter<'static>>>
+        -> Usually<InputMap<App, AppCommand, TuiIn, TokenIter<'static>>>
     {
         if iter.is_none() {
             return Err(format!("missing keys definition").into())
@@ -464,7 +452,7 @@ impl Configuration {
                                 let cond = cond.unwrap();
                                 println!("ok");
                                 map.add_layer_if(
-                                    Box::new(move |state: &App|FromDsl::take_from_or_fail(
+                                    Box::new(move |state: &App|Dsl::take_or_fail(
                                         state, &mut exp.clone(),
                                         format!("missing input layer conditional")
                                     )), keys
diff --git a/crates/app/src/view.rs b/crates/app/src/view.rs
index a30ae1ef..a358f023 100644
--- a/crates/app/src/view.rs
+++ b/crates/app/src/view.rs
@@ -2,35 +2,6 @@ use crate::*;
 pub(crate) use std::fmt::Write;
 pub(crate) use ::tengri::tui::ratatui::prelude::Position;
 
-impl App {
-    pub fn view (&self) -> impl Content<TuiOut> + '_ {
-        let view: Perhaps<Box<dyn Render<TuiOut>>> =
-            FromDsl::take_from(self, &mut self.config.view.clone());
-        Either(view.is_ok(),
-            ThunkRender::new(move|to|if let Some(view) = view.as_ref().unwrap().as_ref() {
-                Content::render(view, to)
-            }),
-            "error?!")
-        //Fill::xy(self.size.of(col! {
-            //Tui::bg(Rgb(72,72,0), When(matches!(&view, Err(_)), Bsp::s(
-                //Fixed::y(1, "view error"),
-                //Bsp::s(
-                    //view.as_ref().err().map(|e|format!("{e}")),
-                    //format!("{}", &self.config.view.0.0))))),
-            //When(matches!(&view, Ok(None)), Bsp::s(
-                //Tui::bg(Rgb(96,48,0),
-                    //Fixed::y(1, Fill::x(Align::w("no view returned, as defined by:")))),
-                //Tui::bg(Rgb(72,32,0),
-                    //Fill::x(Stack::south(|add: &mut dyn FnMut(&dyn Render<TuiOut>)|{
-                        //for line in self.config.view.0.0.split('\n') {
-                            //add(&Fill::x(Align::w(line)));
-                        //}
-                    //}))))),
-            //When(matches!(&view, Ok(Some(_))), &view.unwrap().unwrap()),
-        //}))
-    }
-}
-
 #[tengri_proc::view(TuiOut)]
 impl App {
     pub fn view_nil (&self) -> impl Content<TuiOut> + use<'_> {
diff --git a/crates/cli/tek.rs b/crates/cli/tek.rs
index fd580d00..32a10df7 100644
--- a/crates/cli/tek.rs
+++ b/crates/cli/tek.rs
@@ -91,11 +91,11 @@ impl Cli {
         ));
         Tui::new()?.run(&Jack::new(name)?.run(|jack|{
             for (index, connect) in midi_froms.iter().enumerate() {
-                let port = MidiInput::new(jack, &format!("M/{index}"), &[connect.clone()])?;
+                let port = JackMidiIn::new(jack, &format!("M/{index}"), &[connect.clone()])?;
                 midi_ins.push(port);
             }
             for (index, connect) in midi_tos.iter().enumerate() {
-                let port = MidiOutput::new(jack, &format!("{index}/M"), &[connect.clone()])?;
+                let port = JackMidiOut::new(jack, &format!("{index}/M"), &[connect.clone()])?;
                 midi_outs.push(port);
             };
             let config = Configuration::new(&match self.mode {
diff --git a/crates/device/src/arranger.rs b/crates/device/src/arranger.rs
index a3e25c42..94a7f295 100644
--- a/crates/device/src/arranger.rs
+++ b/crates/device/src/arranger.rs
@@ -18,8 +18,8 @@ mod arranger_view;   pub use self::arranger_view::*;
 
 def_sizes_iter!(ScenesSizes  => Scene);
 def_sizes_iter!(TracksSizes  => Track);
-def_sizes_iter!(InputsSizes  => MidiInput);
-def_sizes_iter!(OutputsSizes => MidiOutput);
+def_sizes_iter!(InputsSizes  => JackMidiIn);
+def_sizes_iter!(OutputsSizes => JackMidiOut);
 def_sizes_iter!(PortsSizes   => Arc<str>, [PortConnect]);
 
 pub(crate) fn wrap (bg: Color, fg: Color, content: impl Content<TuiOut>) -> impl Content<TuiOut> {
diff --git a/crates/device/src/arranger/arranger_api.rs b/crates/device/src/arranger/arranger_api.rs
index 10b79cd2..2feaae37 100644
--- a/crates/device/src/arranger/arranger_api.rs
+++ b/crates/device/src/arranger/arranger_api.rs
@@ -1,4 +1,23 @@
 use crate::*;
+
+#[tengri_proc::expose]
+impl Arrangement {
+    fn _todo_usize_stub_ (&self) -> usize { todo!() }
+    fn _todo_arc_str_stub_ (&self) -> Arc<str> { todo!() }
+    fn _todo_item_theme_stub (&self) -> ItemTheme { todo!() }
+    fn _todo_opt_item_theme_stub (&self) -> Option<ItemTheme> { todo!() }
+    fn select_nothing (&self) -> Selection {
+        Selection::Nothing
+    }
+}
+
+dsl!(TrackCommand:      |self: Arrangement, iter|self.take(iter));
+dsl!(MidiInputCommand:  |self: Arrangement, iter|self.take(iter));
+dsl!(MidiOutputCommand: |self: Arrangement, iter|self.take(iter));
+dsl!(DeviceCommand:     |self: Arrangement, iter|self.take(iter));
+dsl!(SceneCommand:      |self: Arrangement, iter|self.take(iter));
+dsl!(ClipCommand:       |self: Arrangement, iter|self.take(iter));
+
 #[tengri_proc::command(Arrangement)] 
 impl ArrangementCommand {
     fn home (arranger: &mut Arrangement) -> Perhaps<Self> {
@@ -154,7 +173,7 @@ impl ArrangementCommand {
         Ok(None)
     }
     fn output_add (arranger: &mut Arrangement) -> Perhaps<Self> {
-        arranger.midi_outs.push(MidiOutput::new(
+        arranger.midi_outs.push(JackMidiOut::new(
             arranger.jack(),
             format!("/M{}", arranger.midi_outs.len() + 1),
             &[]
@@ -162,7 +181,7 @@ impl ArrangementCommand {
         Ok(None)
     }
     fn input_add (arranger: &mut Arrangement) -> Perhaps<Self> {
-        arranger.midi_ins.push(MidiInput::new(
+        arranger.midi_ins.push(JackMidiIn::new(
             arranger.jack(),
             format!("M{}/", arranger.midi_ins.len() + 1),
             &[]
diff --git a/crates/device/src/arranger/arranger_model.rs b/crates/device/src/arranger/arranger_model.rs
index a11032fb..87c8ce04 100644
--- a/crates/device/src/arranger/arranger_model.rs
+++ b/crates/device/src/arranger/arranger_model.rs
@@ -1,47 +1,7 @@
 use crate::*;
-has!(Jack:               |self: Arrangement|self.jack);
-has!(Clock:              |self: Arrangement|self.clock);
-has!(Selection:          |self: Arrangement|self.selection);
-has!(Vec<MidiInput>:    |self: Arrangement|self.midi_ins);
-has!(Vec<MidiOutput>:   |self: Arrangement|self.midi_outs);
-has!(Vec<Scene>:         |self: Arrangement|self.scenes);
-has!(Vec<Track>:         |self: Arrangement|self.tracks);
-has!(Measure<TuiOut>:    |self: Arrangement|self.size);
-has!(Option<MidiEditor>: |self: Arrangement|self.editor);
-maybe_has!(Track:      |self: Arrangement|
-    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Track>>::get(self).get(index)).flatten() };
-    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Track>>::get_mut(self).get_mut(index)).flatten() });
-maybe_has!(Scene:      |self: Arrangement|
-    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Scene>>::get(self).get(index)).flatten() };
-    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Scene>>::get_mut(self).get_mut(index)).flatten() });
-from_dsl!(MidiInputCommand:  |state: Arrangement, iter|state.selected_midi_in().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-from_dsl!(MidiOutputCommand: |state: Arrangement, iter|state.selected_midi_out().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-from_dsl!(DeviceCommand:     |state: Arrangement, iter|state.selected_device().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-from_dsl!(TrackCommand:      |state: Arrangement, iter|state.selected_track().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-from_dsl!(SceneCommand:      |state: Arrangement, iter|state.selected_scene().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-from_dsl!(ClipCommand:       |state: Arrangement, iter|state.selected_clip().as_ref()
-    .map(|t|FromDsl::take_from(t, iter)).transpose().map(|x|x.flatten()));
-#[tengri_proc::expose] impl Arrangement {
-    fn selected_midi_in  (&self) -> Option<MidiInput>  { todo!() }
-    fn selected_midi_out (&self) -> Option<MidiOutput> { todo!() }
-    fn selected_device   (&self) -> Option<Device>      { todo!() }
-    fn selected_track    (&self) -> Option<Track>       { todo!() }
-    fn selected_scene    (&self) -> Option<Scene>       { todo!() }
-    fn selected_clip     (&self) -> Option<MidiClip>    { todo!() }
-    fn _todo_usize_stub_ (&self) -> usize { todo!() }
-    fn _todo_arc_str_stub_ (&self) -> Arc<str> { todo!() }
-    fn _todo_item_theme_stub (&self) -> ItemTheme { todo!() }
-    fn _todo_opt_item_theme_stub (&self) -> Option<ItemTheme> { todo!() }
-    fn select_nothing (&self) -> Selection {
-        Selection::Nothing
-    }
-}
-#[derive(Default, Debug)] pub struct Arrangement {
+
+#[derive(Default, Debug)]
+pub struct Arrangement {
     /// Project name.
     pub name:         Arc<str>,
     /// Base color.
@@ -53,13 +13,13 @@ from_dsl!(ClipCommand:       |state: Arrangement, iter|state.selected_clip().as_
     /// Allows one MIDI clip to be edited
     pub editor:       Option<MidiEditor>,
     /// List of global midi inputs
-    pub midi_ins:     Vec<MidiInput>,
+    pub midi_ins:     Vec<JackMidiIn>,
     /// List of global midi outputs
-    pub midi_outs:    Vec<MidiOutput>,
+    pub midi_outs:    Vec<JackMidiOut>,
     /// List of global audio inputs
-    pub audio_ins:    Vec<AudioInput>,
+    pub audio_ins:    Vec<JackAudioIn>,
     /// List of global audio outputs
-    pub audio_outs:   Vec<AudioOutput>,
+    pub audio_outs:   Vec<JackAudioOut>,
     /// Last track number (to avoid duplicate port names)
     pub track_last:   usize,
     /// List of tracks
@@ -80,6 +40,23 @@ from_dsl!(ClipCommand:       |state: Arrangement, iter|state.selected_clip().as_
     /// Display size of clips area
     pub inner_size:   Measure<TuiOut>,
 }
+
+has!(Jack:               |self: Arrangement|self.jack);
+has!(Clock:              |self: Arrangement|self.clock);
+has!(Selection:          |self: Arrangement|self.selection);
+has!(Vec<JackMidiIn>:    |self: Arrangement|self.midi_ins);
+has!(Vec<JackMidiOut>:   |self: Arrangement|self.midi_outs);
+has!(Vec<Scene>:         |self: Arrangement|self.scenes);
+has!(Vec<Track>:         |self: Arrangement|self.tracks);
+has!(Measure<TuiOut>:    |self: Arrangement|self.size);
+has!(Option<MidiEditor>: |self: Arrangement|self.editor);
+maybe_has!(Track:      |self: Arrangement|
+    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Track>>::get(self).get(index)).flatten() };
+    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Track>>::get_mut(self).get_mut(index)).flatten() });
+maybe_has!(Scene:      |self: Arrangement|
+    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Scene>>::get(self).get(index)).flatten() };
+    { Has::<Selection>::get(self).track().map(|index|Has::<Vec<Scene>>::get_mut(self).get_mut(index)).flatten() });
+
 impl Arrangement {
     /// Width of display
     pub fn w (&self) -> u16 {
diff --git a/crates/device/src/clock/clock_model.rs b/crates/device/src/clock/clock_model.rs
index ef1bff86..c961233a 100644
--- a/crates/device/src/clock/clock_model.rs
+++ b/crates/device/src/clock/clock_model.rs
@@ -21,11 +21,11 @@ pub struct Clock {
     /// Size of buffer in samples
     pub chunk:     Arc<AtomicUsize>,
     /// For syncing the clock to an external source
-    pub midi_in:   Arc<RwLock<Option<MidiInput>>>,
+    pub midi_in:   Arc<RwLock<Option<JackMidiIn>>>,
     /// For syncing other devices to this clock
-    pub midi_out:  Arc<RwLock<Option<MidiOutput>>>,
+    pub midi_out:  Arc<RwLock<Option<JackMidiOut>>>,
     /// For emitting a metronome
-    pub click_out: Arc<RwLock<Option<AudioOutput>>>,
+    pub click_out: Arc<RwLock<Option<JackAudioOut>>>,
 }
 
 impl std::fmt::Debug for Clock {
@@ -56,9 +56,9 @@ impl Clock {
             offset:    Arc::new(Moment::zero(&timebase)),
             started:   RwLock::new(None).into(),
             timebase,
-            midi_in:   Arc::new(RwLock::new(Some(MidiInput::new(jack, "M/clock", &[])?))),
-            midi_out:  Arc::new(RwLock::new(Some(MidiOutput::new(jack, "clock/M", &[])?))),
-            click_out: Arc::new(RwLock::new(Some(AudioOutput::new(jack, "click", &[])?))),
+            midi_in:   Arc::new(RwLock::new(Some(JackMidiIn::new(jack, "M/clock", &[])?))),
+            midi_out:  Arc::new(RwLock::new(Some(JackMidiOut::new(jack, "clock/M", &[])?))),
+            click_out: Arc::new(RwLock::new(Some(JackAudioOut::new(jack, "click", &[])?))),
         };
         if let Some(bpm) = bpm {
             clock.timebase.bpm.set(bpm);
diff --git a/crates/device/src/device.rs b/crates/device/src/device.rs
index 30ae4366..894aa2d2 100644
--- a/crates/device/src/device.rs
+++ b/crates/device/src/device.rs
@@ -44,25 +44,25 @@ impl Device {
             _ => todo!(),
         }
     }
-    pub fn midi_ins (&self) -> &[MidiInput] {
+    pub fn midi_ins (&self) -> &[JackMidiIn] {
         match self {
             //Self::Sampler(Sampler { midi_in, .. }) => &[midi_in],
             _ => todo!()
         }
     }
-    pub fn midi_outs (&self) -> &[MidiOutput] {
+    pub fn midi_outs (&self) -> &[JackMidiOut] {
         match self {
             Self::Sampler(_) => &[],
             _ => todo!()
         }
     }
-    pub fn audio_ins (&self) -> &[AudioInput] {
+    pub fn audio_ins (&self) -> &[JackAudioIn] {
         match self {
             Self::Sampler(Sampler { audio_ins, .. }) => audio_ins.as_slice(),
             _ => todo!()
         }
     }
-    pub fn audio_outs (&self) -> &[AudioOutput] {
+    pub fn audio_outs (&self) -> &[JackAudioOut] {
         match self {
             Self::Sampler(Sampler { audio_outs, .. }) => audio_outs.as_slice(),
             _ => todo!()
diff --git a/crates/device/src/dialog/dialog_view.rs b/crates/device/src/dialog/dialog_view.rs
index 5f3a7ec0..dadeadbb 100644
--- a/crates/device/src/dialog/dialog_view.rs
+++ b/crates/device/src/dialog/dialog_view.rs
@@ -1,24 +1,19 @@
 use crate::*;
 
-impl Content<TuiOut> for Dialog {
-    fn content (&self) -> impl Render<TuiOut> + '_ {
-        Some(match self {
-            Self::Menu(_) => self.view_dialog_menu().boxed(),
-            _ => "kyp".boxed()
-        })
-            //Self::Help(offset) =>
-                //self.view_dialog_help(*offset).boxed(),
-            //Self::Browser(target, browser) =>
-                //self.view_dialog_browser(target, browser).boxed(),
-            //Self::Options =>
-                //self.view_dialog_options().boxed(),
-            //Self::Device(index) =>
-                //self.view_dialog_device(*index).boxed(),
-            //Self::Message(message) =>
-                //self.view_dialog_message(message).boxed(),
-        //})
-    }
-}
+content!(TuiOut: |self: Dialog| match self {
+    Self::Menu(_) =>
+        self.view_dialog_menu().boxed(),
+    Self::Help(offset) =>
+        self.view_dialog_help(*offset).boxed(),
+    Self::Browser(target, browser) =>
+        self.view_dialog_browser(target, browser).boxed(),
+    Self::Options =>
+        self.view_dialog_options().boxed(),
+    Self::Device(index) =>
+        self.view_dialog_device(*index).boxed(),
+    Self::Message(message) =>
+        self.view_dialog_message(message).boxed(),
+});
 
 content!(TuiOut: |self: Message| match self {
     Self::FailedToAddDevice => "Failed to add device."
@@ -30,7 +25,7 @@ impl Dialog {
         let option  = |a,i|Tui::fg(Rgb(255,255,255), format!("{}", a));
         Bsp::s(Tui::bold(true, "tek!"), Bsp::s("", Map::south(1, options, option)))
     }
-    pub fn view_dialog_help <'a> (&'a self, offset: usize) -> impl Content<TuiOut> + 'a { 
+    pub fn view_dialog_help <'a> (&'a self, offset: usize) -> impl Content<TuiOut> + use<'a> {
         Bsp::s(Tui::bold(true, "Help"), "FIXME")
         //Bsp::s(Tui::bold(true, "Help"), Bsp::s("", Map::south(1,
             //move||self.config.keys.layers.iter()
diff --git a/crates/device/src/pool/pool_api.rs b/crates/device/src/pool/pool_api.rs
index 90edd252..6f9d8b90 100644
--- a/crates/device/src/pool/pool_api.rs
+++ b/crates/device/src/pool/pool_api.rs
@@ -81,6 +81,9 @@ impl PoolCommand {
 
 }
 
+dsl!(BrowserCommand: |self: Pool, iter|Ok(self.browser
+    .as_ref().map(|p|p.take(iter)).transpose()?.flatten()));
+
 #[tengri_proc::command(Pool)]
 impl PoolClipCommand {
 
diff --git a/crates/device/src/pool/pool_model.rs b/crates/device/src/pool/pool_model.rs
index 40ac6632..f6034bf3 100644
--- a/crates/device/src/pool/pool_model.rs
+++ b/crates/device/src/pool/pool_model.rs
@@ -12,11 +12,7 @@ pub struct Pool {
     /// Embedded file browser
     pub browser: Option<Browser>,
 }
-from_dsl!(BrowserCommand: |state: Pool, iter|Ok(state.browser
-    .as_ref()
-    .map(|p|FromDsl::take_from(p, iter))
-    .transpose()?
-    .flatten()));
+
 impl Default for Pool {
     fn default () -> Self {
         use PoolMode::*;
diff --git a/crates/device/src/sampler/sampler_api.rs b/crates/device/src/sampler/sampler_api.rs
index 045398e1..d7b391f7 100644
--- a/crates/device/src/sampler/sampler_api.rs
+++ b/crates/device/src/sampler/sampler_api.rs
@@ -63,17 +63,21 @@ impl SamplerCommand {
     fn record_begin (sampler: &mut Sampler, slot: usize) -> Perhaps<Self> {
         sampler.recording = Some((
             slot,
-            Some(Arc::new(RwLock::new(Sample::new(
+            Arc::new(RwLock::new(Sample::new(
                 "Sample", 0, 0, vec![vec![];sampler.audio_ins.len()]
-            ))))
+            )))
         ));
         Ok(None)
     }
     fn record_finish (sampler: &mut Sampler) -> Perhaps<Self> {
-        let _prev_sample = sampler.recording.as_mut().map(|(index, sample)|{
-            std::mem::swap(sample, &mut sampler.mapped[*index]);
-            sample
-        }); // TODO: undo
+        let recording = sampler.recording.take();
+        let _sample = if let Some((index, sample)) = recording {
+            let old = sampler.mapped[index].clone();
+            sampler.mapped[index] = Some(sample);
+            old
+        } else {
+            None
+        };
         Ok(None)
     }
     fn record_cancel (sampler: &mut Sampler) -> Perhaps<Self> {
diff --git a/crates/device/src/sampler/sampler_audio.rs b/crates/device/src/sampler/sampler_audio.rs
index ec1c08e8..87d0a78e 100644
--- a/crates/device/src/sampler/sampler_audio.rs
+++ b/crates/device/src/sampler/sampler_audio.rs
@@ -28,25 +28,23 @@ impl Sampler {
 
     /// Record from inputs to sample
     fn record_into (&mut self, scope: &ProcessScope) {
-        if let Some(ref sample) = self.recording.as_ref().expect("no recording sample").1 {
-            let mut sample = sample.write().unwrap();
-            if sample.channels.len() != self.audio_ins.len() {
-                panic!("channel count mismatch");
-            }
-            let samples_with_meters = self.audio_ins.iter()
-                .zip(self.input_meters.iter_mut())
-                .zip(sample.channels.iter_mut());
-            let mut length = 0;
-            for ((input, meter), channel) in samples_with_meters {
-                let slice = input.port().as_slice(scope);
-                length = length.max(slice.len());
-                *meter = to_rms(slice);
-                channel.extend_from_slice(slice);
-            }
-            sample.end += length;
-        } else {
-            panic!("tried to record into the void")
+        let mut sample = self.recording
+            .as_mut().expect("no recording sample").1
+            .write().unwrap();
+        if sample.channels.len() != self.audio_ins.len() {
+            panic!("channel count mismatch");
         }
+        let samples_with_meters = self.audio_ins.iter()
+            .zip(self.input_meters.iter_mut())
+            .zip(sample.channels.iter_mut());
+        let mut length = 0;
+        for ((input, meter), channel) in samples_with_meters {
+            let slice = input.port().as_slice(scope);
+            length = length.max(slice.len());
+            *meter = to_rms(slice);
+            channel.extend_from_slice(slice);
+        }
+        sample.end += length;
     }
 
     /// Update input meters
diff --git a/crates/device/src/sampler/sampler_model.rs b/crates/device/src/sampler/sampler_model.rs
index 937d4208..fcd5d0ac 100644
--- a/crates/device/src/sampler/sampler_model.rs
+++ b/crates/device/src/sampler/sampler_model.rs
@@ -8,11 +8,11 @@ pub struct Sampler {
     /// Device color.
     pub color:         ItemTheme,
     /// Audio input ports. Samples get recorded here.
-    pub audio_ins:     Vec<AudioInput>,
+    pub audio_ins:     Vec<JackAudioIn>,
     /// Audio input meters.
     pub input_meters:  Vec<f32>,
     /// Sample currently being recorded.
-    pub recording:     Option<(usize, Option<Arc<RwLock<Sample>>>)>,
+    pub recording:     Option<(usize, Arc<RwLock<Sample>>)>,
     /// Recording buffer.
     pub buffer:        Vec<Vec<f32>>,
     /// Samples mapped to MIDI notes.
@@ -22,11 +22,11 @@ pub struct Sampler {
     /// Sample currently being edited.
     pub editing:       Option<Arc<RwLock<Sample>>>,
     /// MIDI input port. Triggers sample playback.
-    pub midi_in:       MidiInput,
+    pub midi_in:       JackMidiIn,
     /// Collection of currently playing instances of samples.
     pub voices:        Arc<RwLock<Vec<Voice>>>,
     /// Audio output ports. Voices get played here.
-    pub audio_outs:    Vec<AudioOutput>,
+    pub audio_outs:    Vec<JackAudioOut>,
     /// Audio output meters.
     pub output_meters: Vec<f32>,
     /// How to mix the voices.
@@ -58,14 +58,14 @@ impl Sampler {
         let name = name.as_ref();
         Ok(Self {
             name: name.into(),
-            midi_in: MidiInput::new(jack, format!("M/{name}"), midi_from)?,
+            midi_in: JackMidiIn::new(jack, format!("M/{name}"), midi_from)?,
             audio_ins: vec![
-                AudioInput::new(jack, &format!("L/{name}"), audio_from[0])?,
-                AudioInput::new(jack, &format!("R/{name}"), audio_from[1])?,
+                JackAudioIn::new(jack, &format!("L/{name}"), audio_from[0])?,
+                JackAudioIn::new(jack, &format!("R/{name}"), audio_from[1])?,
             ],
             audio_outs: vec![
-                AudioOutput::new(jack, &format!("{name}/L"), audio_to[0])?,
-                AudioOutput::new(jack, &format!("{name}/R"), audio_to[1])?,
+                JackAudioOut::new(jack, &format!("{name}/L"), audio_to[0])?,
+                JackAudioOut::new(jack, &format!("{name}/R"), audio_to[1])?,
             ],
             input_meters:   vec![0.0;2],
             output_meters:  vec![0.0;2],
diff --git a/crates/device/src/sampler/sampler_view.rs b/crates/device/src/sampler/sampler_view.rs
index ef17810a..7b21233d 100644
--- a/crates/device/src/sampler/sampler_view.rs
+++ b/crates/device/src/sampler/sampler_view.rs
@@ -99,7 +99,7 @@ impl Sampler {
 
     pub fn view_sample (&self, note_pt: usize) -> impl Content<TuiOut> + use<'_> {
         Outer(true, Style::default().fg(Tui::g(96)))
-            .enclose(Fill::xy(draw_viewer(if let Some((_, Some(sample))) = &self.recording {
+            .enclose(Fill::xy(draw_viewer(if let Some((_, sample)) = &self.recording {
                 Some(sample)
             } else if let Some(sample) = &self.mapped[note_pt] {
                 Some(sample)
@@ -109,7 +109,7 @@ impl Sampler {
     }
 
     pub fn view_sample_info (&self, note_pt: usize) -> impl Content<TuiOut> + use<'_> {
-        Fill::x(Fixed::y(1, draw_info(if let Some((_, Some(sample))) = &self.recording {
+        Fill::x(Fixed::y(1, draw_info(if let Some((_, sample)) = &self.recording {
             Some(sample)
         } else if let Some(sample) = &self.mapped[note_pt] {
             Some(sample)
@@ -119,7 +119,7 @@ impl Sampler {
     }
 
     pub fn view_sample_status (&self, note_pt: usize) -> impl Content<TuiOut> + use<'_> {
-        Fixed::x(20, draw_info_v(if let Some((_, Some(sample))) = &self.recording {
+        Fixed::x(20, draw_info_v(if let Some((_, sample)) = &self.recording {
             Some(sample)
         } else if let Some(sample) = &self.mapped[note_pt] {
             Some(sample)
diff --git a/crates/device/src/sequencer/seq_model.rs b/crates/device/src/sequencer/seq_model.rs
index 3b411708..22bda520 100644
--- a/crates/device/src/sequencer/seq_model.rs
+++ b/crates/device/src/sequencer/seq_model.rs
@@ -32,9 +32,9 @@ pub struct Sequencer {
     /// Send all notes off
     pub reset:      bool, // TODO?: after Some(nframes)
     /// Record from MIDI ports to current sequence.
-    pub midi_ins:   Vec<MidiInput>,
+    pub midi_ins:   Vec<JackMidiIn>,
     /// Play from current sequence to MIDI ports
-    pub midi_outs:  Vec<MidiOutput>,
+    pub midi_outs:  Vec<JackMidiOut>,
     /// Notes currently held at input
     pub notes_in:   Arc<RwLock<[bool; 128]>>,
     /// Notes currently held at output
@@ -79,8 +79,8 @@ impl Sequencer {
         let _name = name.as_ref();
         let clock = clock.cloned().unwrap_or_default();
         Ok(Self {
-            midi_ins:   vec![MidiInput::new(jack,  format!("M/{}", name.as_ref()), midi_from)?,],
-            midi_outs:  vec![MidiOutput::new(jack, format!("{}/M", name.as_ref()), midi_to)?,  ],
+            midi_ins:   vec![JackMidiIn::new(jack,  format!("M/{}", name.as_ref()), midi_from)?,],
+            midi_outs:  vec![JackMidiOut::new(jack, format!("{}/M", name.as_ref()), midi_to)?,  ],
             play_clip:  clip.map(|clip|(Moment::zero(&clock.timebase), Some(clip.clone()))),
             clock,
             reset:      true,
@@ -102,8 +102,8 @@ impl std::fmt::Debug for Sequencer {
 }
 
 has!(Clock:            |self: Sequencer|self.clock);
-has!(Vec<MidiInput>:  |self:Sequencer| self.midi_ins);
-has!(Vec<MidiOutput>: |self:Sequencer| self.midi_outs);
+has!(Vec<JackMidiIn>:  |self:Sequencer| self.midi_ins);
+has!(Vec<JackMidiOut>: |self:Sequencer| self.midi_outs);
 
 impl MidiMonitor for Sequencer {
     fn notes_in (&self) -> &Arc<RwLock<[bool; 128]>> {
diff --git a/crates/engine/src/audio.rs b/crates/engine/src/audio.rs
deleted file mode 100644
index 565da268..00000000
--- a/crates/engine/src/audio.rs
+++ /dev/null
@@ -1,2 +0,0 @@
-mod audio_in;  pub use self::audio_in::*;
-mod audio_out; pub use self::audio_out::*;
diff --git a/crates/engine/src/audio/audio_in.rs b/crates/engine/src/audio/audio_in.rs
deleted file mode 100644
index 771e53d2..00000000
--- a/crates/engine/src/audio/audio_in.rs
+++ /dev/null
@@ -1,86 +0,0 @@
-use crate::*;
-
-//impl_port!(AudioInput: AudioOut -> AudioIn  |j, n|j.register_port::<AudioOut>(n));
-
-#[derive(Debug)] pub struct AudioInput<'j> {
-    /// Handle to JACK client, for receiving reconnect events.
-    jack: Jack<'j>,
-    /// Port name
-    name: Arc<str>,
-    /// Port handle.
-    port: Port<AudioOut>,
-    /// List of ports to connect to.
-    connections: Vec<PortConnect>
-}
-impl<'j> AsRef<Port<AudioOut>> for AudioInput<'j> {
-    fn as_ref (&self) -> &Port<AudioOut> { &self.port }
-}
-impl<'j> AudioInput<'j> {
-    pub fn new (jack: &Jack, name: impl AsRef<str>, connect: &[PortConnect])
-        -> Usually<Self>
-    {
-        let port = Self {
-            port: jack.register_port::<AudioIn>(name.as_ref())?,
-            jack,
-            name: name.into(),
-            connections: connect.to_vec()
-        };
-        port.connect_to_matching()?;
-        Ok(port)
-    }
-    pub fn name (&self) -> &Arc<str> { &self.name }
-    pub fn port (&self) -> &Port<AudioOut> { &self.port }
-    pub fn port_mut (&mut self) -> &mut Port<AudioOut> { &mut self.port }
-    pub fn into_port (self) -> Port<AudioOut> { self.port }
-    pub fn close (self) -> Usually<()> {
-        let Self { jack, port, .. } = self;
-        Ok(jack.with_client(|client|client.unregister_port(port))?)
-    }
-}
-impl<'j> HasJack<'j> for AudioInput<'j> {
-    fn jack (&self) -> &'j Jack<'j> { &self.jack }
-}
-impl<'j> JackPort<'j> for AudioInput<'j> {
-    type Port = AudioIn;
-    type Pair = AudioOut;
-    fn port (&self) -> &Port<AudioOut> { &self.port }
-}
-//impl<'j, T: AsRef<str>> ConnectTo<'j, T> for AudioInput<'j> {
-    //fn connect_to (&self, to: &T) -> Usually<PortConnectStatus> {
-        //self.with_client(|c|if let Some(ref port) = c.port_by_name(to.as_ref()) {
-            //self.connect_to(port)
-        //} else {
-            //Ok(Missing)
-        //})
-    //}
-//}
-connect_to!(<'j>|self: AudioInput<'j>, port: &str|{
-    self.with_client(|c|if let Some(ref port) = c.port_by_name(port.as_ref()) {
-        self.connect_to(port)
-    } else {
-        Ok(Missing)
-    })
-});
-connect_to!(<'j>|self: AudioInput<'j>, port: Port<AudioOut>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-connect_to!(<'j>|self: AudioInput<'j>, port: Port<Unowned>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-impl<'j> ConnectAuto<'j> for AudioInput<'j> {
-    fn connections (&self) -> &[PortConnect] {
-        &self.connections
-    }
-}
diff --git a/crates/engine/src/audio/audio_out.rs b/crates/engine/src/audio/audio_out.rs
deleted file mode 100644
index 35e3c6c8..00000000
--- a/crates/engine/src/audio/audio_out.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-use crate::*;
-
-//impl_port!(AudioOutput: AudioOut -> AudioIn  |j, n|j.register_port::<AudioOut>(n));
-
-#[derive(Debug)] pub struct AudioOutput<'j> {
-    /// Handle to JACK client, for receiving reconnect events.
-    jack: Jack<'j>,
-    /// Port name
-    name: Arc<str>,
-    /// Port handle.
-    port: Port<AudioOut>,
-    /// List of ports to connect to.
-    connections: Vec<PortConnect>
-}
-impl<'j> AsRef<Port<AudioOut>> for AudioOutput<'j> {
-    fn as_ref (&self) -> &Port<AudioOut> { &self.port }
-}
-impl<'j> AudioOutput<'j> {
-    pub fn new (jack: &Jack, name: impl AsRef<str>, connect: &[PortConnect])
-        -> Usually<Self>
-    {
-        let port = Self {
-            port: jack.register_port::<AudioOut>(name.as_ref())?,
-            jack,
-            name: name.into(),
-            connections: connect.to_vec()
-        };
-        port.connect_to_matching()?;
-        Ok(port)
-    }
-    pub fn name (&self) -> &Arc<str> { &self.name }
-    pub fn port (&self) -> &Port<AudioOut> { &self.port }
-    pub fn port_mut (&mut self) -> &mut Port<AudioOut> { &mut self.port }
-    pub fn into_port (self) -> Port<AudioOut> { self.port }
-    pub fn close (self) -> Usually<()> {
-        let Self { jack, port, .. } = self;
-        Ok(jack.with_client(|client|client.unregister_port(port))?)
-    }
-}
-impl<'j> HasJack<'j> for AudioOutput<'j> {
-    fn jack (&self) -> &'j Jack<'j> { &self.jack }
-}
-impl<'j> JackPort<'j> for AudioOutput<'j> {
-    type Port = AudioOut;
-    type Pair = AudioIn;
-    fn port (&self) -> &Port<AudioOut> { &self.port }
-}
-connect_to!(<'j>|self: AudioOutput<'j>, port: &str|{
-    self.with_client(|c|if let Some(ref port) = c.port_by_name(port.as_ref()) {
-        self.connect_to(port)
-    } else {
-        Ok(Missing)
-    })
-});
-connect_to!(<'j>|self: AudioOutput<'j>, port: Port<AudioIn>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-connect_to!(<'j>|self: AudioOutput<'j>, port: Port<Unowned>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-impl<'j> ConnectAuto<'j> for AudioOutput<'j> {
-    fn connections (&self) -> &[PortConnect] {
-        &self.connections
-    }
-}
diff --git a/crates/engine/src/jack.rs b/crates/engine/src/jack.rs
index 0f3e9dd8..b13d667e 100644
--- a/crates/engine/src/jack.rs
+++ b/crates/engine/src/jack.rs
@@ -7,12 +7,11 @@ pub use ::jack::{*, contrib::{*, ClosureProcessHandler}};
     //Unowned, MidiIn, MidiOut, AudioIn, AudioOut,
 //};
 
-pub(crate) use ConnectName::*;
-pub(crate) use ConnectScope::*;
-pub(crate) use ConnectStatus::*;
+pub(crate) use PortConnectName::*;
+pub(crate) use PortConnectScope::*;
+pub(crate) use PortConnectStatus::*;
 pub(crate) use std::sync::{Arc, RwLock};
 
-mod jack_client;  pub use self::jack_client::*;
-mod jack_device;  pub use self::jack_device::*;
-mod jack_handler; pub use self::jack_handler::*;
-mod jack_port;    pub use self::jack_port::*;
+mod jack_client; pub use self::jack_client::*;
+mod jack_event; pub use self::jack_event::*;
+mod jack_port; pub use self::jack_port::*;
diff --git a/crates/engine/src/jack/jack_client.rs b/crates/engine/src/jack/jack_client.rs
index abf67158..d8d6be6e 100644
--- a/crates/engine/src/jack/jack_client.rs
+++ b/crates/engine/src/jack/jack_client.rs
@@ -2,57 +2,17 @@ use crate::*;
 use super::*;
 use self::JackState::*;
 
-impl<'j, T: Has<Jack<'j>>> HasJack<'j> for T {
-    fn jack (&'j self) -> &'j Jack<'j> { self.get() }
-}
-impl<'j> HasJack<'j> for Jack<'j> {
-    fn jack (&'j self) -> &'j Jack<'j> { self }
-}
-impl<'j> HasJack<'j> for &Jack<'j> {
-    fn jack (&'j self) -> &'j Jack<'j> { self }
+impl<T: Has<Jack>> HasJack for T {
+    fn jack (&self) -> &Jack {
+        self.get()
+    }
 }
 
 /// Things that can provide a [jack::Client] reference.
-pub trait HasJack<'j> {
+pub trait HasJack {
     /// Return the internal [jack::Client] handle
     /// that lets you call the JACK API.
-    fn jack (&'j self) -> &'j Jack<'j>;
-    /// Run the JACK thread.
-    fn run <T: Audio + Send + Sync + 'j> (
-        &self, cb: impl FnOnce(&Jack)->Usually<T>
-    ) -> Usually<Arc<RwLock<T>>> {
-        let jack = self.jack();
-        let app = Arc::new(RwLock::new(cb(jack)?));
-        let mut state = Activating;
-        std::mem::swap(&mut*jack.state.write().unwrap(), &mut state);
-        if let Inactive(client) = state {
-            let client = client.activate_async(
-                // This is the misc notifications handler. It's a struct that wraps a [Box]
-                // which performs type erasure on a callback that takes [JackEvent], which is
-                // one of the available misc notifications.
-                Notifications(Box::new({
-                    let app = app.clone();
-                    move|event|app.write().unwrap().handle(event)
-                }) as BoxedJackEventHandler<'j>),
-                // This is the main processing handler. It's a struct that wraps a [Box]
-                // which performs type erasure on a callback that takes [Client] and [ProcessScope]
-                // and passes them down to the `app`'s `process` callback, which in turn
-                // implements audio and MIDI input and output on a realtime basis.
-                ClosureProcessHandler::new(Box::new({
-                    let app = app.clone();
-                    move|c: &_, s: &_|if let Ok(mut app) = app.write() {
-                        app.process(c, s)
-                    } else {
-                        Control::Quit
-                    }
-                }) as BoxedAudioHandler),
-            )?;
-            *jack.state.write().unwrap() = Active(client);
-        } else {
-            unreachable!();
-        }
-        Ok(app)
-    }
+    fn jack (&self) -> &Jack;
     /// Run something with the client.
     fn with_client <T> (&self, op: impl FnOnce(&Client)->T) -> T {
         match &*self.jack().state.read().unwrap() {
@@ -74,7 +34,7 @@ pub trait HasJack<'j> {
     fn sync_lead (&self, enable: bool, cb: impl Fn(TimebaseInfo)->Position) -> Usually<()> {
         if enable {
             self.with_client(|client|match client.register_timebase_callback(false, cb) {
-               Ok(_) => Ok(()),
+                Ok(_) => Ok(()),
                 Err(e) => Err(e)
             })?
         }
@@ -86,25 +46,71 @@ pub trait HasJack<'j> {
     }
 }
 
-/// Wraps [JackState] and through it [jack::Client].
-#[derive(Clone, Debug, Default)]
-pub struct Jack<'j> {
-    pub state: Arc<RwLock<JackState<'j>>>
+impl HasJack for Jack {
+    fn jack (&self) -> &Jack {
+        self
+    }
 }
 
-impl<'j> Jack<'j> {
+impl HasJack for &Jack {
+    fn jack (&self) -> &Jack {
+        self
+    }
+}
+
+/// Wraps [JackState] and through it [jack::Client].
+#[derive(Clone, Debug, Default)]
+pub struct Jack {
+    pub state: Arc<RwLock<JackState>>
+}
+
+impl Jack {
     pub fn new (name: &str) -> Usually<Self> {
         Ok(Self {
             state: JackState::new(Client::new(name, ClientOptions::NO_START_SERVER)?.0)
         })
     }
+    pub fn run <'j: 'static, T: Audio + 'j> (
+        &self, cb: impl FnOnce(&Jack)->Usually<T>
+    ) -> Usually<Arc<RwLock<T>>> {
+        let app = Arc::new(RwLock::new(cb(self)?));
+        let mut state = Activating;
+        std::mem::swap(&mut*self.state.write().unwrap(), &mut state);
+        if let Inactive(client) = state {
+            let client = client.activate_async(
+                // This is the misc notifications handler. It's a struct that wraps a [Box]
+                // which performs type erasure on a callback that takes [JackEvent], which is
+                // one of the available misc notifications.
+                Notifications(Box::new({
+                    let app = app.clone();
+                    move|event|app.write().unwrap().handle(event)
+                }) as BoxedJackEventHandler),
+                // This is the main processing handler. It's a struct that wraps a [Box]
+                // which performs type erasure on a callback that takes [Client] and [ProcessScope]
+                // and passes them down to the `app`'s `process` callback, which in turn
+                // implements audio and MIDI input and output on a realtime basis.
+                ClosureProcessHandler::new(Box::new({
+                    let app = app.clone();
+                    move|c: &_, s: &_|if let Ok(mut app) = app.write() {
+                        app.process(c, s)
+                    } else {
+                        Control::Quit
+                    }
+                }) as BoxedAudioHandler<'j>),
+            )?;
+            *self.state.write().unwrap() = Active(client);
+        } else {
+            unreachable!();
+        }
+        Ok(app)
+    }
 }
 
 /// This is a connection which may be [Inactive], [Activating], or [Active].
 /// In the [Active] and [Inactive] states, [JackState::client] returns a
 /// [jack::Client], which you can use to talk to the JACK API.
 #[derive(Debug, Default)]
-pub enum JackState<'j> {
+pub enum JackState {
     /// Unused
     #[default] Inert,
     /// Before activation.
@@ -112,11 +118,64 @@ pub enum JackState<'j> {
     /// During activation.
     Activating,
     /// After activation. Must not be dropped for JACK thread to persist.
-    Active(DynamicAsyncClient<'j>),
+    Active(DynamicAsyncClient<'static>),
 }
 
-impl<'j> JackState<'j> {
+impl JackState {
     fn new (client: Client) -> Arc<RwLock<Self>> {
         Arc::new(RwLock::new(Self::Inactive(client)))
     }
 }
+
+/// This is a boxed realtime callback.
+pub type BoxedAudioHandler<'j> =
+    Box<dyn FnMut(&Client, &ProcessScope) -> Control + Send + 'j>;
+
+/// This is the notification handler wrapper for a boxed realtime callback.
+pub type DynamicAudioHandler<'j> =
+    ClosureProcessHandler<(), BoxedAudioHandler<'j>>;
+
+/// This is a boxed [JackEvent] callback.
+pub type BoxedJackEventHandler<'j> =
+    Box<dyn Fn(JackEvent) + Send + Sync + 'j>;
+
+/// This is the notification handler wrapper for a boxed [JackEvent] callback.
+pub type DynamicNotifications<'j> =
+    Notifications<BoxedJackEventHandler<'j>>;
+
+/// This is a running JACK [AsyncClient] with maximum type erasure.
+/// It has one [Box] containing a function that handles [JackEvent]s,
+/// and another [Box] containing a function that handles realtime IO,
+/// and that's all it knows about them.
+pub type DynamicAsyncClient<'j>
+    = AsyncClient<DynamicNotifications<'j>, DynamicAudioHandler<'j>>;
+
+/// Implement [Audio]: provide JACK callbacks.
+#[macro_export] macro_rules! audio {
+    (|
+        $self1:ident:
+        $Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?,$c:ident,$s:ident
+    |$cb:expr$(;|$self2:ident,$e:ident|$cb2:expr)?) => {
+        impl $(<$($L),*$($T $(: $U)?),*>)? Audio for $Struct $(<$($L),*$($T),*>)? {
+            #[inline] fn process (&mut $self1, $c: &Client, $s: &ProcessScope) -> Control { $cb }
+            $(#[inline] fn handle (&mut $self2, $e: JackEvent) { $cb2 })?
+        }
+    }
+}
+
+/// Trait for thing that has a JACK process callback.
+pub trait Audio: Send + Sync {
+    fn handle (&mut self, _event: JackEvent) {}
+    fn process (&mut self, _: &Client, _: &ProcessScope) -> Control {
+        Control::Continue
+    }
+    fn callback (
+        state: &Arc<RwLock<Self>>, client: &Client, scope: &ProcessScope
+    ) -> Control where Self: Sized {
+        if let Ok(mut state) = state.write() {
+            state.process(client, scope)
+        } else {
+            Control::Quit
+        }
+    }
+}
diff --git a/crates/engine/src/jack/jack_device.rs b/crates/engine/src/jack/jack_device.rs
index 01ed254f..7aa3c188 100644
--- a/crates/engine/src/jack/jack_device.rs
+++ b/crates/engine/src/jack/jack_device.rs
@@ -1,86 +1,86 @@
-use crate::*;
+use crate::*
 
-///// A [AudioComponent] bound to a JACK client and a set of ports.
-//pub struct JackDevice<E: Engine> {
-    ///// The active JACK client of this device.
-    //pub client: DynamicAsyncClient,
-    ///// The device state, encapsulated for sharing between threads.
-    //pub state: Arc<RwLock<Box<dyn AudioComponent<E>>>>,
-    ///// Unowned copies of the device's JACK ports, for connecting to the device.
-    ///// The "real" readable/writable `Port`s are owned by the `state`.
-    //pub ports: UnownedJackPorts,
-//}
+/// A [AudioComponent] bound to a JACK client and a set of ports.
+pub struct JackDevice<E: Engine> {
+    /// The active JACK client of this device.
+    pub client: DynamicAsyncClient,
+    /// The device state, encapsulated for sharing between threads.
+    pub state: Arc<RwLock<Box<dyn AudioComponent<E>>>>,
+    /// Unowned copies of the device's JACK ports, for connecting to the device.
+    /// The "real" readable/writable `Port`s are owned by the `state`.
+    pub ports: UnownedJackPorts,
+}
 
-//impl<E: Engine> std::fmt::Debug for JackDevice<E> {
-    //fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        //f.debug_struct("JackDevice")
-            //.field("ports", &self.ports)
-            //.finish()
-    //}
-//}
+impl<E: Engine> std::fmt::Debug for JackDevice<E> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("JackDevice")
+            .field("ports", &self.ports)
+            .finish()
+    }
+}
 
-//impl<E: Engine> Render for JackDevice<E> {
-    //type Engine = E;
-    //fn min_size(&self, to: E::Size) -> Perhaps<E::Size> {
-        //self.state.read().unwrap().layout(to)
-    //}
-    //fn render(&self, to: &mut E::Output) -> Usually<()> {
-        //self.state.read().unwrap().render(to)
-    //}
-//}
+impl<E: Engine> Render for JackDevice<E> {
+    type Engine = E;
+    fn min_size(&self, to: E::Size) -> Perhaps<E::Size> {
+        self.state.read().unwrap().layout(to)
+    }
+    fn render(&self, to: &mut E::Output) -> Usually<()> {
+        self.state.read().unwrap().render(to)
+    }
+}
 
-//impl<E: Engine> Handle<E> for JackDevice<E> {
-    //fn handle(&mut self, from: &E::Input) -> Perhaps<E::Handled> {
-        //self.state.write().unwrap().handle(from)
-    //}
-//}
+impl<E: Engine> Handle<E> for JackDevice<E> {
+    fn handle(&mut self, from: &E::Input) -> Perhaps<E::Handled> {
+        self.state.write().unwrap().handle(from)
+    }
+}
 
-//impl<E: Engine> Ports for JackDevice<E> {
-    //fn audio_ins (&self) -> Usually<Vec<&Port<Unowned>>> {
-        //Ok(self.ports.audio_ins.values().collect())
-    //}
-    //fn audio_outs (&self) -> Usually<Vec<&Port<Unowned>>> {
-        //Ok(self.ports.audio_outs.values().collect())
-    //}
-    //fn midi_ins (&self) -> Usually<Vec<&Port<Unowned>>> {
-        //Ok(self.ports.midi_ins.values().collect())
-    //}
-    //fn midi_outs (&self) -> Usually<Vec<&Port<Unowned>>> {
-        //Ok(self.ports.midi_outs.values().collect())
-    //}
-//}
+impl<E: Engine> Ports for JackDevice<E> {
+    fn audio_ins (&self) -> Usually<Vec<&Port<Unowned>>> {
+        Ok(self.ports.audio_ins.values().collect())
+    }
+    fn audio_outs (&self) -> Usually<Vec<&Port<Unowned>>> {
+        Ok(self.ports.audio_outs.values().collect())
+    }
+    fn midi_ins (&self) -> Usually<Vec<&Port<Unowned>>> {
+        Ok(self.ports.midi_ins.values().collect())
+    }
+    fn midi_outs (&self) -> Usually<Vec<&Port<Unowned>>> {
+        Ok(self.ports.midi_outs.values().collect())
+    }
+}
 
-//impl<E: Engine> JackDevice<E> {
-    ///// Returns a locked mutex of the state's contents.
-    //pub fn state(&self) -> LockResult<RwLockReadGuard<Box<dyn AudioComponent<E>>>> {
-        //self.state.read()
-    //}
-    ///// Returns a locked mutex of the state's contents.
-    //pub fn state_mut(&self) -> LockResult<RwLockWriteGuard<Box<dyn AudioComponent<E>>>> {
-        //self.state.write()
-    //}
-    //pub fn connect_midi_in(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
-        //Ok(self
-            //.client
-            //.as_client()
-            //.connect_ports(port, self.midi_ins()?[index])?)
-    //}
-    //pub fn connect_midi_out(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
-        //Ok(self
-            //.client
-            //.as_client()
-            //.connect_ports(self.midi_outs()?[index], port)?)
-    //}
-    //pub fn connect_audio_in(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
-        //Ok(self
-            //.client
-            //.as_client()
-            //.connect_ports(port, self.audio_ins()?[index])?)
-    //}
-    //pub fn connect_audio_out(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
-        //Ok(self
-            //.client
-            //.as_client()
-            //.connect_ports(self.audio_outs()?[index], port)?)
-    //}
-//}
+impl<E: Engine> JackDevice<E> {
+    /// Returns a locked mutex of the state's contents.
+    pub fn state(&self) -> LockResult<RwLockReadGuard<Box<dyn AudioComponent<E>>>> {
+        self.state.read()
+    }
+    /// Returns a locked mutex of the state's contents.
+    pub fn state_mut(&self) -> LockResult<RwLockWriteGuard<Box<dyn AudioComponent<E>>>> {
+        self.state.write()
+    }
+    pub fn connect_midi_in(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
+        Ok(self
+            .client
+            .as_client()
+            .connect_ports(port, self.midi_ins()?[index])?)
+    }
+    pub fn connect_midi_out(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
+        Ok(self
+            .client
+            .as_client()
+            .connect_ports(self.midi_outs()?[index], port)?)
+    }
+    pub fn connect_audio_in(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
+        Ok(self
+            .client
+            .as_client()
+            .connect_ports(port, self.audio_ins()?[index])?)
+    }
+    pub fn connect_audio_out(&self, index: usize, port: &Port<Unowned>) -> Usually<()> {
+        Ok(self
+            .client
+            .as_client()
+            .connect_ports(self.audio_outs()?[index], port)?)
+    }
+}
diff --git a/crates/engine/src/jack/jack_event.rs b/crates/engine/src/jack/jack_event.rs
new file mode 100644
index 00000000..9ba6ad0f
--- /dev/null
+++ b/crates/engine/src/jack/jack_event.rs
@@ -0,0 +1,56 @@
+use crate::*;
+use super::*;
+
+/// Event enum for JACK events.
+#[derive(Debug, Clone, PartialEq)] pub enum JackEvent {
+    ThreadInit,
+    Shutdown(ClientStatus, Arc<str>),
+    Freewheel(bool),
+    SampleRate(Frames),
+    ClientRegistration(Arc<str>, bool),
+    PortRegistration(PortId, bool),
+    PortRename(PortId, Arc<str>, Arc<str>),
+    PortsConnected(PortId, PortId, bool),
+    GraphReorder,
+    XRun,
+}
+
+/// Generic notification handler that emits [JackEvent]
+pub struct Notifications<T: Fn(JackEvent) + Send>(pub T);
+
+impl<T: Fn(JackEvent) + Send> NotificationHandler for Notifications<T> {
+    fn thread_init(&self, _: &Client) {
+        self.0(JackEvent::ThreadInit);
+    }
+    unsafe fn shutdown(&mut self, status: ClientStatus, reason: &str) {
+        self.0(JackEvent::Shutdown(status, reason.into()));
+    }
+    fn freewheel(&mut self, _: &Client, enabled: bool) {
+        self.0(JackEvent::Freewheel(enabled));
+    }
+    fn sample_rate(&mut self, _: &Client, frames: Frames) -> Control {
+        self.0(JackEvent::SampleRate(frames));
+        Control::Quit
+    }
+    fn client_registration(&mut self, _: &Client, name: &str, reg: bool) {
+        self.0(JackEvent::ClientRegistration(name.into(), reg));
+    }
+    fn port_registration(&mut self, _: &Client, id: PortId, reg: bool) {
+        self.0(JackEvent::PortRegistration(id, reg));
+    }
+    fn port_rename(&mut self, _: &Client, id: PortId, old: &str, new: &str) -> Control {
+        self.0(JackEvent::PortRename(id, old.into(), new.into()));
+        Control::Continue
+    }
+    fn ports_connected(&mut self, _: &Client, a: PortId, b: PortId, are: bool) {
+        self.0(JackEvent::PortsConnected(a, b, are));
+    }
+    fn graph_reorder(&mut self, _: &Client) -> Control {
+        self.0(JackEvent::GraphReorder);
+        Control::Continue
+    }
+    fn xrun(&mut self, _: &Client) -> Control {
+        self.0(JackEvent::XRun);
+        Control::Continue
+    }
+}
diff --git a/crates/engine/src/jack/jack_handler.rs b/crates/engine/src/jack/jack_handler.rs
deleted file mode 100644
index 557f97e4..00000000
--- a/crates/engine/src/jack/jack_handler.rs
+++ /dev/null
@@ -1,105 +0,0 @@
-use crate::*;
-use super::*;
-
-/// Trait for thing that has a JACK process callback.
-pub trait Audio {
-    fn handle (&mut self, _event: JackEvent) {}
-    fn process (&mut self, _: &Client, _: &ProcessScope) -> Control {
-        Control::Continue
-    }
-    fn callback (
-        state: &Arc<RwLock<Self>>, client: &Client, scope: &ProcessScope
-    ) -> Control where Self: Sized {
-        if let Ok(mut state) = state.write() {
-            state.process(client, scope)
-        } else {
-            Control::Quit
-        }
-    }
-}
-
-/// Implement [Audio]: provide JACK callbacks.
-#[macro_export] macro_rules! audio {
-    (|
-        $self1:ident:
-        $Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?,$c:ident,$s:ident
-    |$cb:expr$(;|$self2:ident,$e:ident|$cb2:expr)?) => {
-        impl $(<$($L),*$($T $(: $U)?),*>)? Audio for $Struct $(<$($L),*$($T),*>)? {
-            #[inline] fn process (&mut $self1, $c: &Client, $s: &ProcessScope) -> Control { $cb }
-            $(#[inline] fn handle (&mut $self2, $e: JackEvent) { $cb2 })?
-        }
-    }
-}
-
-/// Event enum for JACK events.
-#[derive(Debug, Clone, PartialEq)] pub enum JackEvent {
-    ThreadInit,
-    Shutdown(ClientStatus, Arc<str>),
-    Freewheel(bool),
-    SampleRate(Frames),
-    ClientRegistration(Arc<str>, bool),
-    PortRegistration(PortId, bool),
-    PortRename(PortId, Arc<str>, Arc<str>),
-    PortsConnected(PortId, PortId, bool),
-    GraphReorder,
-    XRun,
-}
-
-/// Generic notification handler that emits [JackEvent]
-pub struct Notifications<T: Fn(JackEvent) + Send>(pub T);
-
-impl<T: Fn(JackEvent) + Send> NotificationHandler for Notifications<T> {
-    fn thread_init(&self, _: &Client) {
-        self.0(JackEvent::ThreadInit);
-    }
-    unsafe fn shutdown(&mut self, status: ClientStatus, reason: &str) {
-        self.0(JackEvent::Shutdown(status, reason.into()));
-    }
-    fn freewheel(&mut self, _: &Client, enabled: bool) {
-        self.0(JackEvent::Freewheel(enabled));
-    }
-    fn sample_rate(&mut self, _: &Client, frames: Frames) -> Control {
-        self.0(JackEvent::SampleRate(frames));
-        Control::Quit
-    }
-    fn client_registration(&mut self, _: &Client, name: &str, reg: bool) {
-        self.0(JackEvent::ClientRegistration(name.into(), reg));
-    }
-    fn port_registration(&mut self, _: &Client, id: PortId, reg: bool) {
-        self.0(JackEvent::PortRegistration(id, reg));
-    }
-    fn port_rename(&mut self, _: &Client, id: PortId, old: &str, new: &str) -> Control {
-        self.0(JackEvent::PortRename(id, old.into(), new.into()));
-        Control::Continue
-    }
-    fn ports_connected(&mut self, _: &Client, a: PortId, b: PortId, are: bool) {
-        self.0(JackEvent::PortsConnected(a, b, are));
-    }
-    fn graph_reorder(&mut self, _: &Client) -> Control {
-        self.0(JackEvent::GraphReorder);
-        Control::Continue
-    }
-    fn xrun(&mut self, _: &Client) -> Control {
-        self.0(JackEvent::XRun);
-        Control::Continue
-    }
-}
-
-/// This is a running JACK [AsyncClient] with maximum type erasure.
-/// It has one [Box] containing a function that handles [JackEvent]s,
-/// and another [Box] containing a function that handles realtime IO,
-/// and that's all it knows about them.
-pub type DynamicAsyncClient<'j>
-    = AsyncClient<DynamicNotifications<'j>, DynamicAudioHandler<'j>>;
-/// This is the notification handler wrapper for a boxed realtime callback.
-pub type DynamicAudioHandler<'j> =
-    ClosureProcessHandler<(), BoxedAudioHandler<'j>>;
-/// This is a boxed realtime callback.
-pub type BoxedAudioHandler<'j> =
-    Box<dyn FnMut(&Client, &ProcessScope) -> Control + Send + Sync + 'j>;
-/// This is the notification handler wrapper for a boxed [JackEvent] callback.
-pub type DynamicNotifications<'j> =
-    Notifications<BoxedJackEventHandler<'j>>;
-/// This is a boxed [JackEvent] callback.
-pub type BoxedJackEventHandler<'j> =
-    Box<dyn Fn(JackEvent) + Send + Sync + 'j>;
diff --git a/crates/engine/src/jack/jack_port.rs b/crates/engine/src/jack/jack_port.rs
index 13e7aefd..8d0d852d 100644
--- a/crates/engine/src/jack/jack_port.rs
+++ b/crates/engine/src/jack/jack_port.rs
@@ -1,28 +1,18 @@
 use crate::*;
 use super::*;
 
-pub trait JackPort<'j>: HasJack<'j> {
+pub trait JackPort: HasJack {
     type Port: PortSpec;
     type Pair: PortSpec;
     fn port (&self) -> &Port<Self::Port>;
 }
 
-pub trait ConnectTo<'j, T>: JackPort<'j> {
-    fn connect_to (&'j self, to: &T) -> Usually<ConnectStatus>;
+pub trait JackPortConnect<T>: JackPort {
+    fn connect_to (&self, to: T) -> Usually<PortConnectStatus>;
 }
 
-#[macro_export] macro_rules! connect_to {
-    (<$lt:lifetime>|$self:ident:$Self:ty, $port:ident:$Port:ty|$expr:expr) => {
-        impl<$lt> ConnectTo<$lt, &$Port> for $Self {
-            fn connect_to (&$self, $port: &$Port) -> Usually<ConnectStatus> {
-                $expr
-            }
-        }
-    };
-}
-
-pub trait ConnectAuto<'j>: JackPort<'j> + ConnectTo<'j, &'j Port<Unowned>> {
-    fn connections (&self) -> &[Connect];
+pub trait JackPortAutoconnect: JackPort + for<'a>JackPortConnect<&'a Port<Unowned>> {
+    fn conn (&self) -> &[PortConnect];
     fn ports (&self, re_name: Option<&str>, re_type: Option<&str>, flags: PortFlags) -> Vec<String> {
         self.with_client(|c|c.ports(re_name, re_type, flags))
     }
@@ -33,7 +23,7 @@ pub trait ConnectAuto<'j>: JackPort<'j> + ConnectTo<'j, &'j Port<Unowned>> {
         self.with_client(|c|c.port_by_name(name.as_ref()))
     }
     fn connect_to_matching (&self) -> Usually<()> {
-        for connect in self.connections().iter() {
+        for connect in self.conn().iter() {
             //panic!("{connect:?}");
             let status = match &connect.name {
                 Exact(name) => self.connect_exact(name),
@@ -43,9 +33,9 @@ pub trait ConnectAuto<'j>: JackPort<'j> + ConnectTo<'j, &'j Port<Unowned>> {
         }
         Ok(())
     }
-    fn connect_exact (&self, name: &str) ->
-        Usually<Vec<(Port<Unowned>, Arc<str>, ConnectStatus)>>
-    {
+    fn connect_exact (
+        &self, name: &str
+    ) -> Usually<Vec<(Port<Unowned>, Arc<str>, PortConnectStatus)>> {
         self.with_client(|c|{
             let mut status = vec![];
             for port in c.ports(None, None, PortFlags::empty()).iter() {
@@ -64,8 +54,8 @@ pub trait ConnectAuto<'j>: JackPort<'j> + ConnectTo<'j, &'j Port<Unowned>> {
         })
     }
     fn connect_regexp (
-        &self, re: &str, scope: ConnectScope
-    ) -> Usually<Vec<(Port<Unowned>, Arc<str>, ConnectStatus)>> {
+        &self, re: &str, scope: PortConnectScope
+    ) -> Usually<Vec<(Port<Unowned>, Arc<str>, PortConnectStatus)>> {
         self.with_client(|c|{
             let mut status = vec![];
             let ports = c.ports(Some(&re), None, PortFlags::empty());
@@ -85,33 +75,33 @@ pub trait ConnectAuto<'j>: JackPort<'j> + ConnectTo<'j, &'j Port<Unowned>> {
 }
 
 #[derive(Clone, Debug, PartialEq)]
-pub enum ConnectName {
+pub enum PortConnectName {
     /** Exact match */
     Exact(Arc<str>),
     /** Match regular expression */
     RegExp(Arc<str>),
 }
 
-#[derive(Clone, Copy, Debug, PartialEq)] pub enum ConnectScope {
+#[derive(Clone, Copy, Debug, PartialEq)] pub enum PortConnectScope {
     One,
     All
 }
 
-#[derive(Clone, Copy, Debug, PartialEq)] pub enum ConnectStatus {
+#[derive(Clone, Copy, Debug, PartialEq)] pub enum PortConnectStatus {
     Missing,
     Disconnected,
     Connected,
     Mismatch,
 }
 
-#[derive(Clone, Debug)] pub struct Connect {
-    pub name:   ConnectName,
-    pub scope:  ConnectScope,
-    pub status: Arc<RwLock<Vec<(Port<Unowned>, Arc<str>, ConnectStatus)>>>,
+#[derive(Clone, Debug)] pub struct PortConnect {
+    pub name:   PortConnectName,
+    pub scope:  PortConnectScope,
+    pub status: Arc<RwLock<Vec<(Port<Unowned>, Arc<str>, PortConnectStatus)>>>,
     pub info:   Arc<String>,
 }
 
-impl Connect {
+impl PortConnect {
     pub fn collect (exact: &[impl AsRef<str>], re: &[impl AsRef<str>], re_all: &[impl AsRef<str>])
         -> Vec<Self>
     {
@@ -157,3 +147,89 @@ impl Connect {
         format!(" ({}) {} {}", status, scope, name).into()
     }
 }
+
+macro_rules! impl_port {
+    ($Name:ident : $Spec:ident -> $Pair:ident |$jack:ident, $name:ident|$port:expr) => {
+        #[derive(Debug)] pub struct $Name {
+            /// Handle to JACK client, for receiving reconnect events.
+            jack: Jack,
+            /// Port name
+            name: Arc<str>,
+            /// Port handle.
+            port: Port<$Spec>,
+            /// List of ports to connect to.
+            conn: Vec<PortConnect>
+        }
+        impl AsRef<Port<$Spec>> for $Name { fn as_ref (&self) -> &Port<$Spec> { &self.port } }
+        impl $Name {
+            pub fn new ($jack: &Jack, name: impl AsRef<str>, connect: &[PortConnect])
+                -> Usually<Self>
+            {
+                let $name = name.as_ref();
+                let jack = $jack.clone();
+                let port = $port?;
+                let name = $name.into();
+                let conn = connect.to_vec();
+                let port = Self { jack, port, name, conn };
+                port.connect_to_matching()?;
+                Ok(port)
+            }
+            pub fn name (&self) -> &Arc<str> { &self.name }
+            pub fn port (&self) -> &Port<$Spec> { &self.port }
+            pub fn port_mut (&mut self) -> &mut Port<$Spec> { &mut self.port }
+            pub fn into_port (self) -> Port<$Spec> { self.port }
+            pub fn close (self) -> Usually<()> {
+                let Self { jack, port, .. } = self;
+                Ok(jack.with_client(|client|client.unregister_port(port))?)
+            }
+        }
+        impl HasJack for $Name { fn jack (&self) -> &Jack { &self.jack } }
+        impl JackPort for $Name {
+            type Port = $Spec;
+            type Pair = $Pair;
+            fn port (&self) -> &Port<$Spec> { &self.port }
+        }
+       impl JackPortConnect<&str> for $Name {
+            fn connect_to (&self, to: &str) -> Usually<PortConnectStatus> {
+                self.with_client(|c|if let Some(ref port) = c.port_by_name(to.as_ref()) {
+                    self.connect_to(port)
+                } else {
+                    Ok(Missing)
+                })
+            }
+        }
+        impl JackPortConnect<&Port<Unowned>> for $Name {
+            fn connect_to (&self, port: &Port<Unowned>) -> Usually<PortConnectStatus> {
+                self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
+                    Connected
+                } else if let Ok(_) = c.connect_ports(port, &self.port) {
+                    Connected
+                } else {
+                    Mismatch
+                }))
+            }
+        }
+        impl JackPortConnect<&Port<$Pair>> for $Name {
+            fn connect_to (&self, port: &Port<$Pair>) -> Usually<PortConnectStatus> {
+                self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
+                    Connected
+                } else if let Ok(_) = c.connect_ports(port, &self.port) {
+                    Connected
+                } else {
+                    Mismatch
+                }))
+            }
+        }
+        impl JackPortAutoconnect for $Name {
+            fn conn (&self) -> &[PortConnect] {
+                &self.conn
+            }
+        }
+    };
+}
+
+impl_port!(JackAudioIn:  AudioIn  -> AudioOut |j, n|j.register_port::<AudioIn>(n));
+
+impl_port!(JackAudioOut: AudioOut -> AudioIn  |j, n|j.register_port::<AudioOut>(n));
+
+impl_port!(JackMidiIn:   MidiIn   -> MidiOut  |j, n|j.register_port::<MidiIn>(n));
diff --git a/crates/engine/src/lib.rs b/crates/engine/src/lib.rs
index 24c4b15f..4791132d 100644
--- a/crates/engine/src/lib.rs
+++ b/crates/engine/src/lib.rs
@@ -1,94 +1,9 @@
 #![feature(type_alias_impl_trait)]
 
-//macro_rules! impl_port {
-    //($Name:ident : $Spec:ident -> $Pair:ident |$jack:ident, $name:ident|$port:expr) => {
-        //#[derive(Debug)] pub struct $Name {
-            ///// Handle to JACK client, for receiving reconnect events.
-            //jack: Jack<'static>,
-            ///// Port name
-            //name: Arc<str>,
-            ///// Port handle.
-            //port: Port<$Spec>,
-            ///// List of ports to connect to.
-            //conn: Vec<PortConnect>
-        //}
-        //impl AsRef<Port<$Spec>> for $Name {
-            //fn as_ref (&self) -> &Port<$Spec> { &self.port }
-        //}
-        //impl $Name {
-            //pub fn new ($jack: &Jack, name: impl AsRef<str>, connect: &[PortConnect])
-                //-> Usually<Self>
-            //{
-                //let $name = name.as_ref();
-                //let jack = $jack.clone();
-                //let port = $port?;
-                //let name = $name.into();
-                //let conn = connect.to_vec();
-                //let port = Self { jack, port, name, conn };
-                //port.connect_to_matching()?;
-                //Ok(port)
-            //}
-            //pub fn name (&self) -> &Arc<str> { &self.name }
-            //pub fn port (&self) -> &Port<$Spec> { &self.port }
-            //pub fn port_mut (&mut self) -> &mut Port<$Spec> { &mut self.port }
-            //pub fn into_port (self) -> Port<$Spec> { self.port }
-            //pub fn close (self) -> Usually<()> {
-                //let Self { jack, port, .. } = self;
-                //Ok(jack.with_client(|client|client.unregister_port(port))?)
-            //}
-        //}
-        //impl HasJack<'static> for $Name {
-            //fn jack (&self) -> &'static Jack<'static> { &self.jack } 
-        //}
-        //impl JackPort<'static> for $Name {
-            //type Port = $Spec;
-            //type Pair = $Pair;
-            //fn port (&self) -> &Port<$Spec> { &self.port }
-        //}
-        //impl ConnectTo<'static, &str> for $Name {
-            //fn connect_to (&self, to: &str) -> Usually<PortConnectStatus> {
-                //self.with_client(|c|if let Some(ref port) = c.port_by_name(to.as_ref()) {
-                    //self.connect_to(port)
-                //} else {
-                    //Ok(Missing)
-                //})
-            //}
-        //}
-        //impl ConnectTo<'static, &Port<Unowned>> for $Name {
-            //fn connect_to (&self, port: &Port<Unowned>) -> Usually<PortConnectStatus> {
-                //self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-                    //Connected
-                //} else if let Ok(_) = c.connect_ports(port, &self.port) {
-                    //Connected
-                //} else {
-                    //Mismatch
-                //}))
-            //}
-        //}
-        //impl ConnectTo<'static, &Port<$Pair>> for $Name {
-            //fn connect_to (&self, port: &Port<$Pair>) -> Usually<PortConnectStatus> {
-                //self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-                    //Connected
-                //} else if let Ok(_) = c.connect_ports(port, &self.port) {
-                    //Connected
-                //} else {
-                    //Mismatch
-                //}))
-            //}
-        //}
-        //impl ConnectAuto<'static> for $Name {
-            //fn connections (&self) -> &[PortConnect] {
-                //&self.conn
-            //}
-        //}
-    //};
-//}
-
 mod time; pub use self::time::*;
 mod note; pub use self::note::*;
 pub mod jack; pub use self::jack::*;
 pub mod midi; pub use self::midi::*;
-pub mod audio; pub use self::audio::*;
 
 pub(crate) use std::sync::{Arc, atomic::{AtomicUsize, AtomicBool, Ordering::Relaxed}};
 pub(crate) use std::fmt::Debug;
diff --git a/crates/engine/src/midi/midi_in.rs b/crates/engine/src/midi/midi_in.rs
index dab3d026..f3282937 100644
--- a/crates/engine/src/midi/midi_in.rs
+++ b/crates/engine/src/midi/midi_in.rs
@@ -1,119 +1,29 @@
 use crate::*;
 
-//impl_port!(MidiInput: MidiOut -> MidiIn  |j, n|j.register_port::<MidiOut>(n));
-
-#[derive(Debug)] pub struct MidiInput<'j> {
-    /// Handle to JACK client, for receiving reconnect events.
-    jack: Jack<'j>,
-    /// Port name
-    name: Arc<str>,
-    /// Port handle.
-    port: Port<MidiOut>,
-    /// List of ports to connect to.
-    connections: Vec<Connect>
-}
-impl<'j> AsRef<Port<MidiOut>> for MidiInput<'j> {
-    fn as_ref (&self) -> &Port<MidiOut> { &self.port }
-}
-impl<'j> MidiInput<'j> {
-    pub fn new (jack: &Jack, name: impl AsRef<str>, connect: &[Connect])
-        -> Usually<Self>
-    {
-        let port = Self {
-            port: jack.register_port::<MidiIn>(name.as_ref())?,
-            jack,
-            name: name.into(),
-            connections: connect.to_vec()
-        };
-        port.connect_to_matching()?;
-        Ok(port)
-    }
-    pub fn name (&self) -> &Arc<str> {
-        &self.name
-    }
-    pub fn port (&self) -> &Port<MidiOut> {
-        &self.port
-    }
-    pub fn port_mut (&mut self) -> &mut Port<MidiOut> {
-        &mut self.port
-    }
-    pub fn into_port (self) -> Port<MidiOut> {
-        self.port
-    }
-    pub fn close (self) -> Usually<()> {
-        let Self { jack, port, .. } = self;
-        Ok(jack.with_client(|client|client.unregister_port(port))?)
-    }
+impl JackMidiIn {
     pub fn parsed <'a> (&'a self, scope: &'a ProcessScope) -> impl Iterator<Item=(usize, LiveEvent<'a>, &'a [u8])> {
         parse_midi_input(self.port().iter(scope))
     }
 }
-impl<'j> HasJack<'j> for MidiInput<'j> {
-    fn jack (&self) -> &'j Jack<'j> { &self.jack }
-}
-impl<'j> JackPort<'j> for MidiInput<'j> {
-    type Port = MidiIn;
-    type Pair = MidiOut;
-    fn port (&self) -> &Port<MidiOut> { &self.port }
-}
-//impl<'j, T: AsRef<str>> ConnectTo<'j, T> for MidiInput<'j> {
-    //fn connect_to (&self, to: &T) -> Usually<ConnectStatus> {
-        //self.with_client(|c|if let Some(ref port) = c.port_by_name(to.as_ref()) {
-            //self.connect_to(port)
-        //} else {
-            //Ok(Missing)
-        //})
-    //}
-//}
-connect_to!(<'j>|self: MidiInput<'j>, port: &str|{
-    self.with_client(|c|if let Some(ref port) = c.port_by_name(port.as_ref()) {
-        self.connect_to(port)
-    } else {
-        Ok(Missing)
-    })
-});
-connect_to!(<'j>|self: MidiInput<'j>, port: Port<MidiOut>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-connect_to!(<'j>|self: MidiInput<'j>, port: Port<Unowned>|{
-    self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
-        Connected
-    } else if let Ok(_) = c.connect_ports(port, &self.port) {
-        Connected
-    } else {
-        Mismatch
-    }))
-});
-impl<'j> ConnectAuto<'j> for MidiInput<'j> {
-    fn connections (&self) -> &[Connect] {
-        &self.connections
-    }
-}
 
-#[tengri_proc::command(MidiInput)]
+#[tengri_proc::command(JackMidiIn)]
 impl MidiInputCommand {
-    //fn _todo_ (_port: &mut MidiInput) -> Perhaps<Self> { Ok(None) }
+    fn _todo_ (_port: &mut JackMidiIn) -> Perhaps<Self> { Ok(None) }
 }
 
-impl<T: Has<Vec<MidiInput>>> HasMidiIns for T {
-    fn midi_ins (&self) -> &Vec<MidiInput> {
+impl<T: Has<Vec<JackMidiIn>>> HasMidiIns for T {
+    fn midi_ins (&self) -> &Vec<JackMidiIn> {
         self.get()
     }
-    fn midi_ins_mut (&mut self) -> &mut Vec<MidiInput> {
+    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn> {
         self.get_mut()
     }
 }
 
 /// Trait for thing that may receive MIDI.
 pub trait HasMidiIns {
-    fn midi_ins (&self) -> &Vec<MidiInput>;
-    fn midi_ins_mut (&mut self) -> &mut Vec<MidiInput>;
+    fn midi_ins (&self) -> &Vec<JackMidiIn>;
+    fn midi_ins_mut (&mut self) -> &mut Vec<JackMidiIn>;
     /// Collect MIDI input from app ports (TODO preallocate large buffers)
     fn midi_input_collect <'a> (&'a self, scope: &'a ProcessScope) -> CollectedMidiInput<'a> {
         self.midi_ins().iter()
@@ -123,7 +33,7 @@ pub trait HasMidiIns {
             .collect::<Vec<_>>()
     }
     fn midi_ins_with_sizes <'a> (&'a self) ->
-        impl Iterator<Item=(usize, &Arc<str>, &[Connect], usize, usize)> + Send + Sync + 'a
+        impl Iterator<Item=(usize, &Arc<str>, &[PortConnect], usize, usize)> + Send + Sync + 'a
     {
         let mut y = 0;
         self.midi_ins().iter().enumerate().map(move|(i, input)|{
@@ -137,10 +47,10 @@ pub trait HasMidiIns {
 
 pub type CollectedMidiInput<'a> = Vec<Vec<(u32, Result<LiveEvent<'a>, MidiError>)>>;
 
-impl<'j, T: HasMidiIns + HasJack<'j>> AddMidiIn for T {
+impl<T: HasMidiIns + HasJack> AddMidiIn for T {
     fn midi_in_add (&mut self) -> Usually<()> {
         let index = self.midi_ins().len();
-        let port  = MidiInput::new(self.jack(), &format!("M/{index}"), &[])?;
+        let port  = JackMidiIn::new(self.jack(), &format!("M/{index}"), &[])?;
         self.midi_ins_mut().push(port);
         Ok(())
     }
diff --git a/crates/engine/src/midi/midi_out.rs b/crates/engine/src/midi/midi_out.rs
index 5a0fba73..bb896c2a 100644
--- a/crates/engine/src/midi/midi_out.rs
+++ b/crates/engine/src/midi/midi_out.rs
@@ -1,14 +1,14 @@
 use crate::*;
 
-#[derive(Debug)] pub struct MidiOutput {
+#[derive(Debug)] pub struct JackMidiOut {
     /// Handle to JACK client, for receiving reconnect events.
-    jack: Jack<'static>,
+    jack: Jack,
     /// Port name
     name: Arc<str>,
     /// Port handle.
     port: Port<MidiOut>,
     /// List of ports to connect to.
-    conn: Vec<Connect>,
+    conn: Vec<PortConnect>,
     /// List of currently held notes.
     held: Arc<RwLock<[bool;128]>>,
     /// Buffer
@@ -17,10 +17,10 @@ use crate::*;
     output_buffer: Vec<Vec<Vec<u8>>>,
 }
 
-has!(Jack<'static>: |self: MidiOutput|self.jack);
+has!(Jack: |self: JackMidiOut|self.jack);
 
-impl MidiOutput {
-    pub fn new (jack: &Jack, name: impl AsRef<str>, connect: &[Connect])
+impl JackMidiOut {
+    pub fn new (jack: &Jack, name: impl AsRef<str>, connect: &[PortConnect])
         -> Usually<Self>
     {
         let jack = jack.clone();
@@ -94,20 +94,20 @@ impl MidiOutput {
     }
 }
 
-impl AsRef<Port<MidiOut>> for MidiOutput {
+impl AsRef<Port<MidiOut>> for JackMidiOut {
     fn as_ref (&self) -> &Port<MidiOut> {
         &self.port
     }
 }
 
-impl JackPort<'static> for MidiOutput {
+impl JackPort for JackMidiOut {
     type Port = MidiOut;
     type Pair = MidiIn;
     fn port (&self) -> &Port<MidiOut> { &self.port }
 }
 
-impl ConnectTo<'static, &str> for MidiOutput {
-    fn connect_to (&self, to: &str) -> Usually<ConnectStatus> {
+impl JackPortConnect<&str> for JackMidiOut {
+    fn connect_to (&self, to: &str) -> Usually<PortConnectStatus> {
         self.with_client(|c|if let Some(ref port) = c.port_by_name(to.as_ref()) {
             self.connect_to(port)
         } else {
@@ -116,8 +116,8 @@ impl ConnectTo<'static, &str> for MidiOutput {
     }
 }
 
-impl ConnectTo<'static, &Port<Unowned>> for MidiOutput {
-    fn connect_to (&self, port: &Port<Unowned>) -> Usually<ConnectStatus> {
+impl JackPortConnect<&Port<Unowned>> for JackMidiOut {
+    fn connect_to (&self, port: &Port<Unowned>) -> Usually<PortConnectStatus> {
         self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
             Connected
         } else if let Ok(_) = c.connect_ports(port, &self.port) {
@@ -128,8 +128,8 @@ impl ConnectTo<'static, &Port<Unowned>> for MidiOutput {
     }
 }
 
-impl ConnectTo<'static, &Port<MidiIn>> for MidiOutput {
-    fn connect_to (&self, port: &Port<MidiIn>) -> Usually<ConnectStatus> {
+impl JackPortConnect<&Port<MidiIn>> for JackMidiOut {
+    fn connect_to (&self, port: &Port<MidiIn>) -> Usually<PortConnectStatus> {
         self.with_client(|c|Ok(if let Ok(_) = c.connect_ports(&self.port, port) {
             Connected
         } else if let Ok(_) = c.connect_ports(port, &self.port) {
@@ -140,22 +140,22 @@ impl ConnectTo<'static, &Port<MidiIn>> for MidiOutput {
     }
 }
 
-impl ConnectAuto<'static> for MidiOutput {
-    fn connections (&self) -> &[Connect] {
+impl JackPortAutoconnect for JackMidiOut {
+    fn conn (&self) -> &[PortConnect] {
         &self.conn
     }
 }
 
-#[tengri_proc::command(MidiOutput)]
+#[tengri_proc::command(JackMidiOut)]
 impl MidiOutputCommand {
-    fn _todo_ (_port: &mut MidiOutput) -> Perhaps<Self> { Ok(None) }
+    fn _todo_ (_port: &mut JackMidiOut) -> Perhaps<Self> { Ok(None) }
 }
 
-impl<T: Has<Vec<MidiOutput>>> HasMidiOuts for T {
-    fn midi_outs (&self) -> &Vec<MidiOutput> {
+impl<T: Has<Vec<JackMidiOut>>> HasMidiOuts for T {
+    fn midi_outs (&self) -> &Vec<JackMidiOut> {
         self.get()
     }
-    fn midi_outs_mut (&mut self) -> &mut Vec<MidiOutput> {
+    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut> {
         self.get_mut()
     }
 }
@@ -163,10 +163,10 @@ impl<T: Has<Vec<MidiOutput>>> HasMidiOuts for T {
 
 /// Trait for thing that may output MIDI.
 pub trait HasMidiOuts {
-    fn midi_outs (&self) -> &Vec<MidiOutput>;
-    fn midi_outs_mut (&mut self) -> &mut Vec<MidiOutput>;
+    fn midi_outs (&self) -> &Vec<JackMidiOut>;
+    fn midi_outs_mut (&mut self) -> &mut Vec<JackMidiOut>;
     fn midi_outs_with_sizes <'a> (&'a self) ->
-        impl Iterator<Item=(usize, &Arc<str>, &[Connect], usize, usize)> + Send + Sync + 'a
+        impl Iterator<Item=(usize, &Arc<str>, &[PortConnect], usize, usize)> + Send + Sync + 'a
     {
         let mut y = 0;
         self.midi_outs().iter().enumerate().map(move|(i, output)|{
@@ -184,10 +184,10 @@ pub trait HasMidiOuts {
 }
 
 /// Trail for thing that may gain new MIDI ports.
-impl<'j, T: HasMidiOuts + HasJack<'j>> AddMidiOut for T {
+impl<T: HasMidiOuts + HasJack> AddMidiOut for T {
     fn midi_out_add (&mut self) -> Usually<()> {
         let index = self.midi_outs().len();
-        let port  = MidiOutput::new(self.jack(), &format!("{index}/M"), &[])?;
+        let port  = JackMidiOut::new(self.jack(), &format!("{index}/M"), &[])?;
         self.midi_outs_mut().push(port);
         Ok(())
     }
diff --git a/deps/tengri b/deps/tengri
index 455d6d00..90f5699f 160000
--- a/deps/tengri
+++ b/deps/tengri
@@ -1 +1 @@
-Subproject commit 455d6d00d5f91e7f9f6b9d3711aa47e09900ad46
+Subproject commit 90f5699fff48d2e8e0a24c36741a7d4ff771385d