Amazon.com: Green Lantern: Original Motion Picture Soundtrack: James Newton Howard: MP3 Downloads (http://www.amazon.com/Green-Lantern-Original-Picture-Soundtrack/dp/B0051ZWBUQ/ref=sr_1_2?ie=UTF8&qid=1306253430&sr=8-2)

MP3 Only?

In my opinion based on these 30 seconds previews, the vibe I'm getting is that it's going to consist of a lot of electronic/rock in there, at least for the Earth-related tracks. It does kind of sound really out of place with an intergalactic saga. The rock anthem approach to "The Corps" was not what I would've expected. I couldn't pick up anything thematic based on these previews, maybe a sliver of it in "We're Going To Fly Now." Well, the good news is, it seems to be a lengthy one.

EDIT:

Scratch that, looks like my math was terrible, it's actually only 52:47.

EDIT 2: Alternate official link:

http://greenlanternmovie.warnerbros.com/#/soundtrack

Some of the music sort of gave me a Metal Gear Solid type vibe. It's certainly not the sound I was expecting, but hopefully once I hear the score fully I'll like it more.