I agree. Jedi Rocks is the single most egregious change to the OT, and the one segment of the SE that is absolute unwatchable junk. While I disagree with all of the changes, I can understand them. But this one is incomprehensible to me.
For one thing, it is inconceivable that music in Jabba's Palace, a long time ago in a galaxy far far away, that they would have the exact same Vegas show music as we have, with blues riffs and Tower of Power horn arrangements. And secondly, the CGI is utterly embarrassing. The fact that it is actually in the movie is the most solid proof of George's insanity, IMHO.