Wouldn’t it require a very expansive library add-on ? Hum… I remember Newguy (who made the best regrade/semi-SE of ANH I know… EDIT: just saw on the spleen Nev technicolor version is available since this summer, need to catch this one !) finished his project with a DTS sound file, so I guess he might know how to handle that.
(he hasn’t showed up here in a long time though: http://originaltrilogy.com/user/newguy/id/16590)