Beautiful but can be even more so. :)
I like it. I love that you build the piece up, adding more and more layers and tension, throughout the whole thing. I almost wish there was this growing tension through the entire piece. It felt like that halfway through, you dropped into a much lower place and it lost that edge. Argh, I actually feel like I'm not explaining this in a very good way, though. Haha.
With all that said, this song is perfect for a flash movie. Your looping is excellent, quite honestly the best I've ever seen on this site. I'm just giving you a suggestion on how to make it even more wonderful. :)