Audio problem: After Reggie Ray is in the coma, they tape him to two players and one of them (the one on Reggie's right) makes an obscene comment, which is spoken with amazing clarity though he has a mouthpiece in. His lips are obviously not in sync with what he says.
Audio problem: In the scene by the ambulance after the football game against the Wildcats, Jake is seen walking in his football cleats. During this time, it is quiet. Football cleats are extremely loud to walk in.
Answer: The song is called "Yoo Hoo" by Imperial Teen. The same song plays in Jawbreaker when Rose McGowan is leading her friends down the hall, which is of course, the scene that Not Another Teen Movie is mimicking.