How to get iTunes cover art?

I have an iPhone 4 and I want to get the cover (album) art for my music, I have 300+ songs and only half of them have it. I can't sync my iPhone to the computer and just download it from iTunes the normal way, my computer is too old and won't support the version of iTunes that will work the phone. Is there's a way to get the cover art without using a computer?

Unfortunately you need iTunes to put cover art onto your phone. On iTunes you would click a button that says "Get all album artwork" or if you right clicked on a song or album by itself there's an option to "get album artwork". I use this function all the time but sadly you can't do that without the computer.

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