sometimes when i play a song i get this odd "popping" noise...its usually when im listening to my headphones, but its not the song because when i move the slider back to before the popping happened, the sound is gone...so its not the song thats bad, and i dont think its the headphones since ive listened to my ipod on them and i never got the noise there and they are uber-ultra high fi headphones...... my only other guess is something with itunes itself, or my headphones are picking up some type of internal sound from the computer? but it doesnt sound like the CPU's chirping noise or a hard drive spinning....its almost as if i were listening to a cd and there was a small scratch on it....i dont know what else to try