You can extract the music using Miles Sound Tools at http://www.radgametools.com/miles.htm . Just target the *.wav files and extract away. They should extract to wave format by default.
No, Miles Sound Tools isn't a shady program either. Rad has had its technology used for a crapload of stuff, such as Smacker Video, Bink Video, and Miles Sound Tools (HOMM I, II, III, IV, Mechwarrior 2, Starcraft, Warcraft, and almost any other game you can think of).
Personally, I don't know if it is illegal to just extract the files, considering that you would have to own the game in the first place, and functionally, they would just be forcing you to open up the game and pick fights instead of just click on the track. I think their issue would be distributing the music. Or, at least, I hope it is.
--Garfield3d