HT204053 How do I link my accounts I have 2 accounts and can't sync my IPod with ITunes

Question

How do I link 2 accounts in ITunes Store so I can sunk music I purchased?

Answer 1

You can't link two accounts, all content is tied to the account that downloaded it and accounts can't be merged nor content transferred between them.
You can have more than account authorised on your computer's iTunes via the Store > Authorise This Computer menu option and you should be able to sync content from both to your iPod. If you redownload and account's purchases (or use iTunes Match or automatic downloads on an account) then you might tie your computer to that account for 90 days : http://support.apple.com/kb/HT4627 - so you won't be able to do those three things on another account until the 90 days have completed.
To sync music, connect you iPod to your computer and select it on the left-hand sidebar of your computer's iTunes (you can enable the sidebar via option-command-S on a Mac, control-S on a PC), and then use the Music tab on the right-hand side of the iTunes screen to select and sync your music to your iPod.