Audio problem: Frasier is on the air and is talking to Roz who is in her booth. As he says "Meanwhile, this is Dr. Frasier Crane," we can see his reflection in the glass but his lips aren't moving, even though he is talking.
Audio problem: When Frasier and Martin go to see the woman play the piano it's very badly dubbed. Quite often her hands are at totally the wrong end for the sound the instrument is producing.
And Frasier Makes Three - S11-E20
Audio problem: There are two audio problems in this episode, both in the same scene. Frasier is in his apt. talking to Niles, Daphne, and Martin. After Marty says, "Wow, really?", we hear a couple of garbled words while Niles' lips move. Then as Frasier heads to the door, Daphne asks, "How'd he hurt himself anyway?" While she is saying this, we can hear a phone ringing faintly. It is not coming from on stage, no one moves to answer a phone, and it has no part of the plot.
Chosen answer: The turkey's stuffing.