The music in the surround channels throughout ANH is reversed, and the Death Star attack has one music cue that's dialed down so low it's basically inaudible. Plus the dialogue audio levels are all over the place throughout the film. Simply put, the 2004 audio is a mess.

One of these days, I'd like to go through it and fix all the problems while preserving the legitimate "deliberate creative decisions" (the altered Krayt dragon call, Threepio's "We've stopped!", the stormtrooper's "There's no one here!", the static in the THX 1138 scene, etc.) unique to the 2004 version. But then I remember how little I care about the 2004 SE, and how much I hate most of the changes I'd be preserving ...