Hello. I just happened to come across this thread. Years ago I made my own laserdisc transfers of the trilogy and created isolated music tracks for them which ended up being called the ISOMIX discs. I've been updating them periodically since then, and they now match Harmy's latest De-specialized versions. I have 4 different tracks:

1) Star Wars - Isolated Music - Matches film and includes deleted Music from Trash Compactor scene

2) The Empire Strikes Back - (mostly) Matches film with extra music. For example, it has the unused music for the Luke/Darth Vader lightsaber duel. The original Isomix disc did not. It doesn't match the film in instances like the scene where Boba Fett escapes with Han. In the original mix, the music was edited to end as the ship flew away, which is how I edited it in the original ISOMIX release. In the updated version, it plays as originally scored - continuously into the second Luke/Vader lightsaber battle.

3) TESB - Full Mix with extra cues. - This uses the THX laserdisc audio (digitally captured) and mixes in the unused music cues into the full mix. Examples - the entire opening introducing Han and Chewie, the Luke/Vader fight, the introduction of Yoda, etc.

4) ROTJ - Isolated Music - Matches the film as much as possible, with some extra cues, like the scene where Ben fills in the backstory on Anakin while in Dagobah. I've heard another isolated score track, (I think it's Editdroid, but I'm not certain) that used unreleased music during the Jabba scenes. Mine is edited to match the movie as closely as possible. Recent updates also include a version of Lapti-Nek that's much closer to the theatrical version and the Sail Barge music taken from the 2004 Dvds. (These were ripped from the rear channels, so they're pretty heavily futzed.)

If there's interest, I can bounce down uncompressed 48k wav files some time this weekend. I'd appreciate help on how to share files of this size, though.