I posted this in the feedback group but there's been a game update since then that hasn't fixed it so I'm reposting here:
Updated to 403372 and this bug came about. Since updated to 403872 and it still persists.
Music is normal until I enter a negotiation or combat and it cuts out after about a second, not to return until I enter another fight/argument.
Program also freezes upon 'exit to desktop' - black screen with only the version number visible in bottom left, requires task killer,
Enter any combat/negotiation.