iTunes User Guide
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Most of us store music in two places: on our computer and on our iPod or other MP3 player. But if your computer crashes indefinitely, all the music you hopefully purchased disappears along with it. So what's left? A handicapped iPod, as Apple restricts its gadgets to sync with one music library--any attempts to sync with a different computer will result in a deleted iPod. Naturally, there's a workaround.
Copy Music From Your iPod to Your Computer
Believe it or not, transferring music from an iPod to a computer is probably easier than you think it is. Take a minute to check all your software and get your songs ready. Make sure that the latest updates have been installed if nothing else, this adds some quality of life changes that will make the other steps easier. Likewise, if possible, make sure that your mobile device is also updated. When you are ready, connect your Apple device to your computer. A typical USB port should work fine for this purpose. There have been some reports of certain USB 3.
Do you have an old iPod that's sitting around gathering dust? It might still have old music on it that you no longer possess in any other form. If that's the case, grab your old music player, because you can transfer the music from your iPod to your computer. To do so, you just need to consider your iPod as an external drive that you can take music from. Once extracted from the iPod, you can add music to your iTunes library and even sync it with your iPhone. We'll show you how. First, you'll need to make sure you can transfer the music on your iPod without iTunes erasing it while syncing. When you connect a device to iTunes, the music in your iTunes library is automatically synced to your device. You cannot download music from an iPod or iPhone or iPad into iTunes. So if you connect an iPod to iTunes, the music on the device will be overwritten with what's in your iTunes library.