Dark_Jedi is working on a new version that includes all the original audio mixes as well (1977 mono/stereo, Hairy_Hen's recreation of the 1977 70mm six-track mix in 5.1, and DJ himself is working on syncing the 1980 and 1983 stereo mixes for ESB and ROTJ).
EditDroid has a decent one out now, with the 1977 mono mix and a newly-created 5.1 track, but I don't like their Greedo subtitles at all.