Hmm, hopefully we can get definitive numbers on the precise correct delay figures for all three movies. So far, Darth Mallwalker's figure of 1.017 - 1.018 seems to match up quite well with Belbucus's number for A New Hope.
boba feta: Don't forget that you might be able to upload the PCM track for one entire Star Wars movie as one big flac file on megaupload, which I think allows files of that size to be uploaded. I'm not sure, but it's worth checking out.