Audio problem: Apparently there was a problem with the sound recording during a scene of Ben Cartwright speaking to his son Adam while standing by the chuck wagon. One of Ben's lines was dubbed in by someone else whose voice was higher-pitched and less gruff than that of actor Lorne Greene.
Audio problem: The keys we see being depressed on the player piano never bear any resemblance to the actual notes we hear. (00:13:00)
Earthbound - S1-E17
Audio problem: McCauley and the engineer take a space walk to repair the ship's engines. We hear their tools clanking against the metal hull as the repair is made, and they pound loudly on the hatch door to reboard the ship when they've finished. None of these sounds would be audible in the vacuum of space.