I just bought a used iPod and am working through the set-up procedure. In most respects it seems to be working well. I have an internet connect and have synched with my computer. However, the device is not registering as a disc on my desktop. This leaves me puzzled about how I can transfer to the iPod. I figured it would ea drag-n-drop operation, but I cant see the device to drag to. I have tried three separate USB ports and re-started my Mac to see if that would joggle it. It hasn't. Any suggestions?