So far, just the game music. I did notice it getting a little dull while playing yesterday though, so perhaps I'll bust out tunes of all the popular girl bands with members aged 18-25 within the last 10 years and see how that goes.
Mentions of Cloyster - 444 Number of 56th posts stolen - 135
I listen to my normal playlist, so mostly rock and metal plus some rap and techno-ish stuff (too many subgenres, I'm too lazy to look up everything) and actually some other soundtracks (GITS, Mirror's Edge, Morrowind are my favourites). Also, podcasts. I studied one time while playing - I listened to a study related podcast while I killed stuff, 'twas good.
Link, please? I didn't know they have audio ones.
We do what we must / because we can. / For the good of all of us. / Except the ones who are dead.