the music is called "clubbed to death (kurayamino mix)" by Rob Doughan. it was made famous by the matrix, you know, the lady in the red dress scene. As such, you can find it on the matrix soundtrack cd. just a side, i believe "clubbed to death II" is used on the matix reloaded soundtrack, and is verry good
after a little poking around, i have further info. Rob's album is called "furious angels" which features the kurayamino vetsion of clubbed to death, and infact it is Furious angels (the title track) which features on the matrix reloaded soundtrack, although i believe it may eb an instrumental version (i am not sure)