According to a reliable source from John Williams Fan website the 2CD set of the Attack of the Clones Soundtrack is 'completely finished'... but Lucasfilm refuses to release it! The CD has around 40 + minutes of extra material mostly from the beginning of the movie. It does exist and it was about to be released very early-on but Lucasfilm said no to it.
Ingo Sucks, you'll be happy to know you don't need video to tackle this, as its essentially an audio project. All you need is copy of the audio track from the dvd's to align the music tracks to, and a capable audio editing program - and maybe a copy of something like ifoedit. As you're already playing the soundtracks on your computer I can't see any issue stopping you from having ago yourself.