This wasn’t originally in mono but IMO the surround mix on the BD for NeverEnding Story is a big effed up mess. Not so much sound effects changed or whatever but just over all mixed entirely different than the original. Reverb added or in some cases removed or certain sounds that are very clear in one case but not the other. Examples.
Original
BD
Note there’s reverb in Falkor’s voice in the original.
Original
BD
Way too much reverb added in the BD mix in this scene. If it matters some streaming versions still use the original mix for this film.