I'd assume that since the "digital sound" was added for the 1992 pressing, that it's the 1985 mix, while the analog (assuming it's the same analog mix from the 1985 pressing) track is the theatrical 1980 mix.
I'm downloading your sample right now, but since I don't actually know the difference between the 80/85 mixes of Empire, I probably wouldn't be able to pick out which was which.