When I open up the game, there's literally no music, but there's sound. (I.E. the portal noises) I check my audio, and the music is on 30 percent per the usual for me. Any fix or is this new?

The music certainly works when testing here and no one had reported a similar problem. Try verifying cache and reinstalling the mod..?

A shot in the dark, but try running NTT on compatibility mode.