I, for one, absolutely love the music in this game. Specifically, I really enjoy the music that plays in Hell (so much so that I've just sat around before squishing grapes so that I could listen to it), but even more than that, I love the music that plays in the Ilmenskie Deeps.
Now, for the Dirge of the Damned, the wiki page has a link to the music file. However, I'm at a loss as to where I can find the background music for ID. Does anyone know if there is a repository of Glitch's music that I can listen to?