Thanks for all the helpful hints! I did actually wind up discovering inputSources.clear() which let me load a new source correctly, as you predicted. I’m still chasing down other odd behavior, though, such as the inability to play from the start of the file after it reached EOF, despite setting the position back to 0 after stop() and before start(). I’ll look into the ChannelRemappingAudioSource and BufferingAudioSource to address utility and performance issues.