The music's pretty cool, though I obviously haven't seen the movie in the question as i have no idea where it comes from (thing its mentioned up in the thread as Alexander or something). I'm not sure about the vocals, they're okay listening to it but I'm not sure how it'd come across in the mission. My favourites are actually the arrival cues, it's a shame FS2 didn't have more of these (especially Allied arrival).
I might have to throw it in a mission and see how it plays out. The campaign I'm working on already has some custom music in it for the main hall (it's mostly on a vasudan ship, and the psamptik has ass for ambience) though it's just some FS1 stuff ala inferno. I could explore the possibility of other stuff going in there.