In your edit, is it neccessary to edit the audio independantly from the video, if not then rip the movie as one file with something like dvdshrink and edit it in womble that way, you won't have any synch problems. Also, as is being attempted in multiple edits for ep1, they are trying to cut out the entire beginning and explain it all in a new scroll so that when it fades away you are right in the action with amidala fleeing naboo (just like her daughter fleeing vader and the empire in ep 4!)