SoundManager Track's on_track_stop() recurses til crash

[jupart]

I noticed when setting SoundManager.loop_music = True (which I wish would loop the currently played track, but I can hack that in) that when the track gets stopped, because of .bind(on_stop=on_track_stop), it recurses until we hit a RuntimeError: Maximum recursion depth exceeded. Alternatively, this causes random tracks to get played and stopped randomly if you have more than one track in SoundManager.music_dict.

[jupart]

Not really a solution, but I created a new function SoundManager.play_track_to_stop() without the if self.current_track is not None check, which I call if self.loop_music is True in self.on_track_stop.

[jupart]

Probably a separate issue, but you can't .stop() tracks when self.loop_music is True. Another is auto-played after the stop.