Edit: Just finished listening to ROTJ...its starts with the 20 Century Fox logo music and ends with the credits music....if only I could have downloaded it..........
Obviously, some of the msuic from the OT is not there...like the Yub Yub song (its ok...didn't care fot it much) and some music has been added. I'd say about 90% of the OT music is there......I think I might buy it...