How do I reset the authorized computer setting/restriction on my iPod when it connects to iTunes?
You can deauthorize all five computers in one fell swoop through iTunes. Here are the instructions from Apple’s website (scroll toward the bottom of the article for the steps on deauthorizing all computers): About iTunes Store authorization and deauthorization iTunes Store purchases can be authorized in iTunes to play on up to five computers. Deauthorizing a computer allows you to manage which computers can play purchased music, videos, audiobooks, or other content. Authorization helps protect the copyrights on the content you buy. You can use your digital rights management (DRM) protected music purchases from the iTunes Store on up to five different computers (this can be any mix of Macintosh or Windows-compatible computers). When you play an item you’ve purchased, your computer is “authorized” to play content purchased using your Apple Account. Note: Songs you encode in AAC format from a source other than the iTunes Store, such as your own audio CDs, do not need to be authorized. To
