diff --git a/core/chanora_core/src/lib.rs b/core/chanora_core/src/lib.rs
index ee742aa..670517d 100644
--- a/core/chanora_core/src/lib.rs
+++ b/core/chanora_core/src/lib.rs
@@ -891,15 +891,18 @@ impl ChanoraSession {
             if let Some(projection) = projection {
                 self.emit_voice_state(projection).await;
             }
-            if let Err(audio_err) = self.ensure_audio_running().await {
-                warn!(
-                    target: "chanora_core",
-                    error = %audio_err,
-                    "auto-join default channel: server placed us in a channel but audio engine \
-                     failed to start; continuing with no-audio in-channel state"
-                );
-                let _ = self.events_tx.send(SessionEvent::AudioStopped);
-            }
+            let session = self.clone();
+            tokio::spawn(async move {
+                if let Err(audio_err) = session.ensure_audio_running().await {
+                    warn!(
+                        target: "chanora_core",
+                        error = %audio_err,
+                        "auto-join default channel: server placed us in a channel but audio engine \
+                         failed to start; continuing with no-audio in-channel state"
+                    );
+                    let _ = session.events_tx.send(SessionEvent::AudioStopped);
+                }
+            });
         }
 
         Ok(snap)
@@ -1388,11 +1391,12 @@ impl ChanoraSession {
         Some(audio.audio_processing_stats())
     }
 
-    /// Configure the preferred Silero ONNX VAD model path.
+    /// Configure the preferred Silero ONNX VAD model path on platforms
+    /// that ship the ONNX detector.
     ///
-    /// This does not require an active connection. Running iOS audio
-    /// backends observe the model-path epoch and reload on the next
-    /// capture frame when Silero is selected.
+    /// This does not require an active connection. Running non-iOS
+    /// audio backends can observe the model-path epoch and reload on
+    /// the next capture frame when Silero is selected.
     pub async fn set_vad_model_path(&self, path: String) -> Result<(), CoreError> {
         chanora_audio::vad::set_silero_model_path(&path)?;
         Ok(())
@@ -1404,8 +1408,10 @@ impl ChanoraSession {
         let guard = self.inner.lock().await;
         if let Some(state) = guard.as_ref() {
             if let Some(audio) = state.audio.as_ref() {
-                let mut config = audio.audio_processing_config_snapshot();
-                config.route = route;
+                let config = chanora_audio::route_policy::apply_route_change(
+                    &audio.audio_processing_config_snapshot(),
+                    route,
+                );
                 audio.set_audio_processing_config(config)?;
                 #[cfg(any(target_os = "ios", target_os = "macos"))]
                 {