wrap JackClient in Arc

crates/tek_sequencer/src/arranger_cli.rs

@@ -50,7 +50,7 @@ impl ArrangerCli {
                 |state: &Arc<RwLock<TransportToolbar<Tui>>>, client, scope| {
                     state.write().unwrap().process(client, scope)
                 }
-            )?
+            )?.into()
         );
         Tui::run(Arc::new(RwLock::new(Arranger::new(
             self.transport.then_some(transport),

crates/tek_sequencer/src/sequencer_cli.rs

@@ -27,7 +27,7 @@ impl SequencerCli {
                 |state: &Arc<RwLock<TransportToolbar<Tui>>>, client, scope| {
                     state.write().unwrap().process(client, scope)
                 }
-            )?
+            )?.into()
         );
         let focus_cursor = (1, 1);
         let clock        = transport.read().unwrap().clock.clone();

crates/tek_sequencer/src/transport.rs

@@ -24,7 +24,7 @@ pub struct TransportToolbar<E: Engine> {
     /// Enable metronome?
     pub metronome: bool,
     /// JACK client handle (needs to not be dropped for standalone mode to work).
-    pub jack:      Option<JackClient>,
+    pub jack:      Option<Arc<JackClient>>,
     /// JACK transport handle.
     pub transport: Option<Transport>,
     /// Global sample and usec at which playback started

crates/tek_sequencer/src/transport_cli.rs

@@ -13,7 +13,7 @@ pub fn main () -> Usually<()> {
             |state: &Arc<RwLock<TransportToolbar<Tui>>>, client, scope| {
                 state.write().unwrap().process(client, scope)
             }
-        )?
+        )?.into()
     );
     Tui::run(transport)?;
     Ok(())