Rolling Stone has a piece on the sound effects behind Star Wars. It's a bit of an ad for the Blu-ray disks, of course, but nevertheless somewhat interesting:
Most fans will probably take more immediate notice of the newly high-def presentation in the recently released Star Wars Blu-ray set, but most aspects of the classic films have been reapproached and tweaked to take full advantage of modern-day home theater systems. Burtt worked alongside supervising sound editor Matt Wood in bringing the Blu-ray box set together, a process which both men discussed in separate interviews with Rolling Stone.
"It's the first time we'll ever have the movie out in a format that is basically just a file copied right from our archives at Skywalker Sound direct to the public," says Wood. "It's just this uncompressed master that can finally be heard."