I guess I must be one of the lucky sorts to have the 2001 re-release, though without any telltale clues there's no way to be sure. But, having read your review I have to say that I heard the flaw you mentioned in "Betrayal/Shields Down". The other flaws you mentioned I did not hear except for the voices at the end of "Riding The Sandworm". By the way, after listening to it twice or three times, the voice seems to be saying "Take one". I cannot speculate as to why the voice appeared in the track, but until it was pointed out I never even heard it. Regardless, I am pleased with the reissue. So pleased in fact that I took the original 1984 pressing of the Dune soundtrack (which for anyone who cares, was re-released again under another imprint, The Collector's Pipeline TCP013CD), and the reissue, and created a single soundtrack from the two discs. Using the dialog pieces and the Prophecy Theme, the track time increased to 77:28.

I agree that a re-mastering should eliminate flaws, but either due to laziness or for reasons of esthetics, the flaws were not elimanated. Not all flaws CAN be eliminated either. Especially the voices, which apparently appeared on the Master tape, if what the voice said on the recording was "Take One". If I recall correctly, digital recording was in its infancy in 1984 and movies still recorded their soundtracks on tape. Like the process of filming the movie itself, the music also had multiple takes due to the orchestra being out of tune, or an odd noise, or even if the tape broke. The finest example of this process was in the Two-CD reissue of Star Wars. The bonus track (after an annoying five minute pause) played the main title five times, and each take was subtly different. Preceeding each take was a voice (presumably John Williams) giving the take number (the bonus track plays takes 16 through 20). According the liner notes, takes 19 and 20 were mastered together to create the final theme as heard in the film. Perhaps the final cut of "Riding the Sandworm" became unusable and the only version available was the unused "first take". We will never know unless someone from P.E.G. decides to pony up a response.