I own 3 of the Apple Universal Docks and one of them is not working correctly. I use it mostly for the line out to a portable stereo and it seems the line out stopped working and the remote isnt working either. It's like when i dock my nano or iphone it doesnt connect. The funny thing is when i dock it with my computer via usb my iphone and nano WILL charge... I bought it from best buy and i dont have the receipt.... do u think they can look up my card info and exchange it for me??