Hey folks-- I've checked IMDB and I'm not satisfied... thought I would ask the experts. I'm well aware that the rare Casper DTS LD is considered one of -- if not THE -- finest sound mixes ever for home video in any format. But was there ever an AC3 disc in 5.1 sound? And if so, does anyone own it and can you tell me what the mix is like? Also, if the other THX-approved disc ISN'T 5.1, how is the pro-logic mix? Worth buying? I like the movie a good bit, just want to get this question answered. Thanks a bundle.