Medieval music mod "4winds" for Medieval 2 Total War (pc) game or Stainless Steel mod:
1. put all my mod mp3s in stainless steel/data/sounds/music (incase for vanilla M2TW - M2TW/data/sounds)
2. copy my descr_sounds_music.txt into ss/data
3. delete (backup before doing that) both 2 events files and 2 music files in ss/data/sound and
4. launch the game - then new music should work, cuz the game rebuilds those files when it is started.