I have an iPod Nano, and I use it with iTunes. Yesterday I got an iPod Shuffle. I am unable to transfer music the Shuffle. When I select it with iTunes, I do not see the Sync. Tab. I loaded version 7, and it is still the same. I looked in the menus but found nothing. When I select Shuffle, and select Sync, it tells me that it is already synced. I even restored my shuffle. What is happening?