Music changes are still being decided on a scene by scene basis. Right now we have added or changed music to mostly prequel scenes. I can only think of one scene from the ot that we have changed the music too and the last time we discussed that we were talking about changing it back.
Sadly enough alot of the changes are dictated by our abilities to do certain things. If only I had a clean dialogue track with no music the possibilities would be endless.
Just to give you an idea of how long this is taking. I am 2:05 into the speeder chase scene from aotc. This has taken me approximately three weeks to get this far and the hardest part is yet to come.
If anyone has any more questions please don't hesitate to ask. I'm off to find a sound effect for Anakin's speeder as it zooms by camera.