I have a clarion cz702 that i bought brand new. I have been using my ipod nano with (4th gen i think?) for the past few days. All was working good until i was playing it and the music cut out and made a high pitched whining noise until i turned the volume down. I changed the source to the radio right away and it worked fine on the radio. Well now whenever i try to plug my ipod into the HU via usb it wont play. It will connect to it and all like i can skip tracks, browse thru playlists and everything, but when i choose a song theres no volume. The HU works fine with the few songs i have on my USB flash drive but i can no longer get it to work with my ipod after that incident. I have tried resetting the HU and resetting the ipod and it didnt work. the ipod itself works fine and can play music. Anyone ever seen anything like this?