Audio problem: When they play the "Sounds Of Silence" and get to the verse "And the people bowed and prayed", "and the people" was left off of the closed captioning. In the verse "And the sign flashed out its warning", "and the sign flashed out" is left off. In fact half of the song is left out.
Audio problem: When Ben and Elaine go on their first date, they're driving really fast in his car and talking. When each of them talks, the wind noise is evident in the audio. This means they used the original audio on scene, instead of replacing it later (known as ADR). The cuts in the audio here are very noticeable.