DailyTransport: remove custom tracks before leaving

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added support to `RimeHttpTTSService` for the `arcana` model.
 
+### Fixed
+
+- Remove custom audio tracks from `DailyTransport` before leaving.
+
 ## [0.0.66] - 2025-05-02
 
 ### Added

src/pipecat/transports/services/daily.py

@@ -578,6 +578,10 @@ class DailyTransportClient(EventHandler):
         if self._params.transcription_enabled:
             await self._stop_transcription()
 
+        # Remove any custom tracks, if any.
+        for track_name, _ in self._audio_sources.items():
+            await self.remove_custom_audio_track(track_name)
+
         try:
             error = await self._leave()
             if not error:
@@ -741,6 +745,14 @@ class DailyTransportClient(EventHandler):
 
         return audio_source
 
+    async def remove_custom_audio_track(self, track_name: str):
+        future = self._get_event_loop().create_future()
+        self._client.remove_custom_audio_track(
+            track_name=track_name,
+            completion=completion_callback(future),
+        )
+        await future
+
     async def update_transcription(self, participants=None, instance_id=None):
         future = self._get_event_loop().create_future()
         self._client.update_transcription(