In the episode "The one with the Princess Lea fantasy" , Monica goes to the post office to pick up a package and it turns out to be a set of Civil War videos she bought for Richard.
At the end of the episode she is watching then when the door goes.
The narrator says something about "bombarded by" when Monica switches the tape off.
After she falls asleep and her dad switches on the tape the narrator doesn't bother finishing his sentence but we can still hear the music and other sounds on the tape.