Music

I initially just made this pull request for the music/sfx commit, but apparently there is a month old commit that never got merged when I made map names more consistent and other things. I didn't know there would be more than the music commit in this pull request. Let me know if that's a problem. But you can probably just pull all of it at the same time.
Edit: updated the submodule with preprocessor macros for pokered's music.
Edit2: replaced alternate start pointers with labels for meetrival and cities1.