Alright everyone theres a band called "GuyzNite", that specifically made a rock song for all 4 Die Hard films. So its not just a random song mixed with a few clips from Die Hard. It was specifically made for the films, and goes great with the complilation of all 4 Die Hards. It may not be the greatest, but its for those who are action junkies, or fans of the Die Hard franchise.
http://youtube.com/watch?v=OTyw6cq86kY