baramos: It can be a bit of a hit and miss on their games whether they offer the soundtrack seperately. That said, this seems like a game where it would be pretty easy to get the soundtrack through files in the unofficial Drog Black Tooth patch or what have you (check out www.terra-arcanum.com which is the best site for info on this game, I use it all the time and the people on the forums are pretty active and helpful in comparison to other places I've looked at).

EDIT: Nevermind, they have the soundtrack right on the site, in multiple formats;

http://terra-arcanum.com/downloads/

Click on first link, "Arcanum". Click on "Soundtrack". There is a lossless version in .wav format, as well as .mp3 and so on. You may have to convert them with something like Foobar, not sure.