Problem with lack of Music

I installed a music player (MQG Music Player) on my world a couple of days ago, everything seemed fine in both preview and on my headset. But now I can't hear any of the music, even in preview mode. I uninstalled everything and reinstalled, and still nothing. I thought maybe it was the music player UI, but when I bring in a "Meta Sound" that isn't connected to the UI, I still don't hear anything. 

The sound of the Avatar "jumping" and landing still sounds, so I know noise is coming through...

Anyone have any suggestions for me to try? I don't HAVE to have the music, so no big deal if it can't be fixed. It just kinda seemed weird to all of the sudden stop...