As far as the vhs back in the day with music, I ran a tv out from my computer and ran it to vhs, with the synched up music track overlayed from a burned cd at the same time. It was primitive, but it did the trick.
FYI, the music on biggs scene 1 is from Shadows of the Empire. The music for the second scene was edited together from many scenes in ANH, until it synched.