On the subject of XM music modules, here’s the Professor Sinister mod:
This has all of the different tracks embedded in it in different blocks. The song index is:
- 00: Empty block (songs that don’t loop jump here when they end)
- 01: Climb Time (in-game music);
- 0B: Pause jingle;
- 0C: Oh Well (game over music);
- 14: Something Sinister (title music);
- 27: Ooops (lost a life music).
You’ll need something like MilkyTracker to play it.