Or provide a wave file of a M & E (Music and Effects) audio track, so that members can prepare foreign language audio-mixes to your edits.
It could at least be a lossless compressed format (FLAC) to save on online storage size
But this is impossible, as it would first require that Ady has an M&E track of the movie which…no one does outside Lucasfilm?
Since the lengths of Ady’s SW fan-edits are different from the final-theatrical lengths of the films, custom audio-mixes would have been created to conform with the lengths of Ady edits. There are audio-files of the unique sound-effects from the SW franchise that have been collected and stored by the fans and other fans have used these audio files to make custom edits of their favorite SW films. This was the case for these Ady SW fan-edits.
So preparing a Music and Effects audio file–with the English dialogue removed–from these custom audio mixes is possible. It’s just a matter of Ady wanting to do one and share them.
Obviously Ady’s going to have to be the final word on this, but I do not think that’s the case. I’m pretty sure he was using some version of the theatrical audio (Harry Hen’s 5.1 remaster?) for the base, and then making edits along the way. A full creation of an M&E track for even one film is probably impossible; I doubt that all sound effects used at all points in the film have been made available elsewhere, to say nothing of foley work, unreleased bits of music, etc.
ROTJ Storyboard Reconstruction Project