I have a Nano, I haven't ever registered it. It pops up an error message saying I have too many songs and it can't be synced. I need help.
Take a look at this link-> Apple - Support - iPod nano
specifically, the "Is there enough room on the iPod?" (about ⅓ of the way down this page)
in the Apple - Support - iPod nano - Syncing section.
If you still have the problem, the retailer who sold you the iPod nano can help you.
Mac OSX 10.8.2
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