Yeah, when I select an audio source after selecting dual zone, nothing happens. At first I thought it could be an iPod issue, but it doesnt work with the radio either. If I plug in my front speakers to the 2 zone outputs and leave the 2 zone option off, music plays fine. When I turn dual zone on, the sound will start going crazy like old analog tvs that can't pick up a signal. Maybe it's got something to do with having all my speakers run off an amp. If anyone is interested, this unit will most likely be up for sale.