- I installed iTunes on a PC.
- I authorized iTunes (luckily it was the 4th out of 5 times they allow).
- When I plugged in the iPod, iTunes recognized that this iPod was previously sync'd with another computer, popped up a warning and gave me 2 options:
a. erase the iPod and sync it with the PC
b. transfer all of my purchased music to iTunes on the PC.
4. I chose "b" and all is good.
Now a word of warning... there was a check box on the a/b choice window that said "Do not show this window again" or something like that. If that box had been checked in the past, I have read that iTunes will just automatically sync to the new PC and wipe the old data. I was lucky because iTunes had never been installed on this PC before.