I can't immediately figure out why, but in certain areas the BGM audio is glitched. In Tarkas, Zanark and some other places the music plays fine for ~1 second, after which it becomes extremely jittery and sounds like some static is going on....
Edit: I just wrote this comment, restarted my pc, and it seems fixed. Im a silly goose sometimes. Leaving the comment incase someone else has this issue too