Audio problem: Magneto's mouth is closed when he says "The mutant race will no longer be managed, mister delegate." (00:02:20)
Audio problem: Fabian Cortez's mouth is closed when he says "Lord Magneto." (00:10:15)
Audio problem: When Xavier is saying "I fear Magneto may come to depend upon it like a drug," Beast is actually the one mouthing the line. (00:14:15)
Answer: Chris Potter, the original Gambit voice actor, did indeed quit the role in the 4th season. His last episode was The Phalanx Covenant Part 1 so it seems reasonable that Fox would limit the use of the character even though it was recast. It doesn't appear that Potter left the role due to animosity, he stated in an interview that he wished to play Gambit in the first live action X-Men film.
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