I had a REAL problem with the volume level going up and down and the sound "pumping" along with a muffled sound. Didn't happen all the time. Didn't happen with the same songs all the time. I know that it made me listen to music on my Mac less often! Chris On Thursday, May 29, 2003, at 12:16 PM, Kunga wrote: > Wow. My 4.0 sounds fine. What should I be listening for that is so > obviously bad? Please try and be specific. I cannot detect a problem.