I have two Ipod shuffles on two different computers and now have a third. How can I hook up all the shuffles to download music I have stored from my main computer? One of the shuffles is registere on the main system, the second on my lap top and the t.

Question

I have 2 ipod shuffles and one nano. One of the shuffles is registered on the main computer, the second on my laptop. the nano I just got.  Can I download music from my main system even though my second is registered on the laptop, or does all my stuff have to be registered on my main system?

Answer 1

If those older shuffles work and have the songs on them...
For songs purchased from the iTunes Store, you can use iTunes to transfer from iPod to computer.  The command (in the current version of iTunes) is at
iTunes Menu Bar -> File -> Devices -> Transfer Purchases from [name of iPod]
However, you may need to have your current computer authorized with the Apple ID (iTunes Store account) used to make the purchase.  If you do not, the purchases from that Apple ID may not transfer.
There are third-party methods and utiltiies (not using iTunes) to transfer song files from iPod to computer.  These should not care about Apple ID or that a particular song was purchased from iTunes Store or not.  If you do a Google search on something like "ipod transfer," you should get some links.
Once the song files from the two older shuffles are transferred to your computer, you can add those songs to your iTunes library.  Then, sync your 4th gen shuffle from the "consolidated" iTunes library.