I edited the original War Rock trailer in Windows Movie Maker, I imported it, tweaked around with it & added some stuff. War Rock is a free multiplayer First Person Shooter like Counterstrike: Source & Battlefield 2 combined. My original video can be found here; http://youtube.com/watch?
v=H9jWG6-87Ao. The 'music' is called Hell March Mix Electronica. You may also want to turn up the volume a little, since it lost quality when converted.