Yes it can be done. First you'll need to create a folder in data/sounds. Name this folder "music". Then you simply paste your music track into this folder. Please note that all music tracks must be mp3 files or it will not work. After that, open up descr_sounds_music.txt. Find the music piece you want to change. (It isn't that clear so you may need to do some experimenting to find which one you want) Then rename the music file listed after the location. (Make sure to use "_" for spaces.) Lastly, delete "events.dat" and "events.idx" in the sound folder. Your music should play in the game then.