Here's what I have:
Star Wars
- 1977 Theatrical Mono - uncompressed WAV, synchronized to GOUT
- 1997 Theatrical Stereo - uncompressed WAV, synchronized to GOUT
- 1985 Laserdisc Stereo - 3 uncompressed WAVs, not combined or synchronized to anything
- 1993 Laserdisc Stereo - uncompressed WAV, synchronized to GOUT (better quality than highly-compressed GOUT audio)
Empire & Jedi
- 1993 Laserdisc Stereo - uncompressed WAV, synchronized to GOUT (better quality than highly-compressed GOUT audio)
Sadly, I don't have the 1980 theatrical stereo mix for Empire (no mono mix for Empire or Jedi exists, and the 6-track surrond mixes are unavailable), or the 1985 laserdisc remixes for either one.
I've heard that the 1983 theatrical stereo, 1985 laserdisc mix, and 1993 laserdisc mix are all identical for Jedi, but I don't think it's ever been confirmed.
I've also heard that the 1980 theatrical stereo and 1985 laserdisc mix are identical for Empire, but I know of at least one difference between the 1985 and 1993 Empire mixes - there's a sound effect of a crashing snowspeeder missing in the 1993 mix.
The Star Wars mono mix is up on Rapidshare, and I can PM you the links if you want. I can upload the other mixes later on, but probably not today (they're just sitting on my computer hard drive right now).