Wow, so much to reply to.
@Dais: True, while a lot of this doesn't sound like traditional Megaten music, the setting is so different than the other games that it warrants it, not to mention the more hard-up sci-fi tone the series hasn't seen before. I also don't think it's as strong as the old scores either, but I do enjoy what I hear and standalone I do think it's pretty good.
Yes, there doesn't seem to be a whole lot of audio if you've looked at the files, but it's broken up in-game rather traditionally. You've got your battle themes here, cutscene music here, and each area has its own theme. It's not doing anything groundbreaking. A couple of the more common themes you hear are some of my favorites though, such as the "talk" theme and the post-battle music.
@Daniel K : Now, I absolutely loved the tone of the trailer music (and the context of the story it introduced, see below), so yeah, this is one hell of a divisive score. : )
@Megavolt: Yeah, Megavolt gets how I am with music. I re-read DK's comment and it did come off as kind of presumptuous, but obviously didn't mean it that way based on his reply.
The first soundtrack I ever bought before playing the game was FFX. I enjoyed a few tracks here and there, mostly the ones that started with a good hook, but generally far and few between. A few months later when I played the game, I heard all these great themes I skipped over the first time I heard them and made me wonder what I was thinking.
I'm still like that nearly a decade later, though. I forget what it was recently, but I listened to a soundtrack all the way through, no skips, without an impression left. Then I played the game and it clicked. I prefer to have the game's message and thematics to dwell on along with the music.