Its a sync to the film as far as I remember. So an isolated version of what is heard on-screen; I could be wrong though, its been a while. (what is different in the music cues? I know there is at least one alternate track recorded, for the binary sunset scene, but this wasn't simply edited out, it was re-written and re-scored). The ESB version of the Editdroid transfer features the unused tracks I believe--but only some of them; probably the author just didn't realise how many unused recordings there were.