Did you know the soundtrack was composed in a module tracker? Someone recently recorded the full soundtrack playing back in Milkytracker. Pretty neat since you can see how the composers wrote the songs.
And you could use a utility called umr (unreal media reaper) to extract the songs. It was mind blowing to then understand how the game switched patterns to suit the pace, a very clever use of this technology.
https://www.youtube.com/watch?v=iONsjiiqeKg