It's definitely true that they butchered the music in the film (hacked it up, dialed the volume down too low, etc.), but the music wasn't up to OT quality to begin with. This was probably partly George Lucas' fault in his direction of Williams (or lack thereof). But come on- we have two of the most climactic sequences in the movie, the arena battle and the lightsaber fight. Instead of getting brilliant, exciting action music and soaring melodies played by the LSO, we get a guy on a drumset. Give me a break.

Another example- the asteroid chase. No music until the end, and once it does come in, it's mixed too low.

The chase through Coruscant- the same blasted measure of music over and over again. In this case, I'm actually glad the editors intervened, because I personally didn't think the electric guitar fit in at all.

All in all, you'll be able to see immediately how much better the movie becomes simlpy with more realistic colors, better framing, and a soundtrack that actually has something to say (especially during the action sequences).

On the instances where I thought the music was doing its job, though, I kept it (and probably turned up the volume). For instance, I actually kept the "Force theme seguing into Duel of the Fates" cue, when Anakin goes out to search for his mother. I made a couple of video changes, raised the music volume, and restored the ending to William's original, but this sequence actually resembles the original cut, which couldn't be said about most of the others...