I have come across a mock exam question in the Sierra/Bates SCJPJava 6 exam guide/CD that appears to be completely mistaken. It's also possible that I am completely wrong and am missing a valuable clue. However, the introduction to the question specifically lists an "mp.jar" that contains the MusicPlayer.class. However, one of the "correct" answer specifically mentions a "cp.jar", which is not even mentioned in the introduction.
Please validate my suspicions or let me know what I have missed.