What software do you use?
Do you rip all the individual chapters and then with that in Adobe Premier Pro 1.5? (or equivalent)
Also...is the dialogue and sound effects on different channels? Iv heard stories where people have got rid of Jar Jars dialogue and replaced it with an Alien language. Is it possible to just extract the audio? I would imagine if not, then any scene without music would be fine, but with music and not to mention sound effects it would be nigh on impossible.
If its possible to do all this then im gonna join the growing legions on editors!