Also the sound attached to the light saber is fascinating; great find from the FX and sounds guys.
I'm pretty sure that its from a Star Wars video game called Jedi Knight: Jedi academy. They probably recorded it when one guy shot the other with the lightsabered character in multiplayer mode.
The music is called Into the Death Star by John Williams and is actually one of my favourite soundtrackts from the SW movies. I even used to listen to it while browsing my own Summer gallery(for some strange reason I can indetify it with her)