Inserting music requires A LOT of trial and error. I figured out the title theme, but stopped there because I was exhausted from the 1,000+ iterations and micro changes I had to make in order to get it sounding good. I wanted to change the matchup screen music and ingame menu screen music too - it's still something I am interested in. If you have specific questions, let me know and I'll do the best I can to help you out. There's a few things I've forgotten and may have to wade back into the muck again to figure some things out.