how to include your own music in your maps: name your music "track_xx" without quotation marks,
and with "xx" being any number not already taken by an existing music track (music tracks can be found in data>sounds>music)
create a folder in your user content directory named "sounds" and create a folder inside that one named "music"
place your music track in the folder you just created
inside your map, change the "mapmusic" variable (idk exactly what to change it to though, so someone can help on this one
)
test to make sure it works
you're done!
I lost the game.