The stuff on the web I read seems like the whole sound track would have the metadata assigned. No specifics on how big the file would be, just that the whole remix was accomplished with plugins for Avid's ProTools - http://www.avid.com/US/products/family/Pro-Tools/compare

One of the reviews specifically said that dialog was clearer and the mayhem (from the bridge scene in the newest Planet of the Apes movie that was re-mixed from the original stems...) was very immersive...