I'm not sure about that. I know in a few cases they fucked up the music mix during some of the various "improvements". The original DVD release of ANH totally screwed up the cue for the Battle of Yavin. There's a wonderful trumpet fanfare mixed with the Force Theme as the Y-wings (I think) descend towards the Death Star, and on the VHS version, you could hear it, but it was so muted on the DVD to be barely noticeable.
That's pretty cool.
I also think, even though I was snarky about the "enhancements" earlier, there are a few changes in the Special Editions I'll defend. One is the change made in 1997 to the ending of Return of the Jedi. I think that new cue is much more epic, and I think they visuals, as they were in 97, worked. (Again, they screwed this up in 2004 in an attempt to include references to the prequels, but they're awkward and none of them feel like they fit. This is also when they changed Anakin's Force Ghost (which again, looks awkwardly copied and pasted). I think the thing that bugged me the most is showing the Jedi Temple in the background in Coruscant..... why would the Emperor have let that stand? I liked how they handled that in the new canon, though, and made that so that Palpatine made the Jedi Temple the Imperial Palace, which also explains why the Death Star's throne room tower looks like the Jedi Council tower. That makes me feel a lot better about that.)
Jedi Rocks is really stupid, though, and the original music was a lot better, if kind of 80s.