Previously, streaming tracks could not be resumed after pause timeout
because current_audio_data was never set for streaming playback.
Changes:
- Store BufferedMediaSource in current_streaming_source for streaming tracks
- On resume, check if streaming source has complete data and use it
- Clear streaming source on Stop and when switching to non-streaming play
- Log buffered bytes when streaming not complete yet
This allows users to pause streaming tracks and resume them after the
download completes, instead of getting "no audio data available" error.
vicrodh
19d84326b8