I really have not paid attention to the area music that much since the attraction is usually a walk on and the line forms inside the building. Also, I don't recall much or if any music was being played at all during the queue. Once you get to the briefing area, there is some sort of orchestral music similar to those played in NASA shows and space-theme movies. During the ride, there is music in the background to go along with the ride, but the ride is quite intense and you are given tasks to perform so the intensity of the g-forces plus the duties you have to perform as a crew member kinda deviate your attention from it. All I could tell you is the music does match the intensity of the ride, sorta like Treasure Planet's music during those 'soaring thru space' scenes. The music did seem to keep up the pace of the ride, and that's as much as I can remember.
Interesting information available at that site -- Trevor Rabin is the composer of the score to the attraction. I am a fan of some of his film scores, especially Remember the Titans, Jack Frost, and Texas Rangers. We'll have to keep an eye out for a promo release from him, since we can't count on Disney giving us an official release of the music from this attraction.