Open iTunes if it doesn't automatically open. If you don't have iTunes, you can download it for free on the Apple website (see Resources). The first iPod should be listed under "Devices" on the left panel of the iTunes screen.
Connect the other iPod to the computer using the second iPod USB computer cable. It will also appear under "Devices" in iTunes.
Select everything except music files on the first iPod to copy and paste to the second iPod. Once everything has been completely transferred, there will be a pop-up message to let you know it is complete.
If you are upgrading your iPod to a new one or if you want to get a file from a friend's iPod onto yours, you do not need any special software other than iTunes. You will need to make sure that your computer has two USB ports so that you can connect both iPods at the same time. Copying things from one iPod to another is a fairly simple process, but it can take a while if you have a lot of things to copy.
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