I gave Star Wars another listen tonight, and confirmed that the music in the surround channels IS indeed reversed. Go straight to Chapter 49 (the victory ceremony at the end of the movie) and listen to the instrumentation in the front speakers and compare it to the surrounds. It's very obviously reversed. Unfreaking believable! That might explain why the music sounds somewhat off throughout the movie. If you listen to Empire and Jedi, the mixing with the music is well done and the whole soundtrack is cohesive. With all the tinkering with the movie and the soundtrack that was done, you would think that something as seemingly simple as L and R channels would not get overlooked.