Here's how you can find and remove exact duplicate songs in iTunes. This makes it very easy to get rid of songs that are exact copies, and it will help clean up your iTunes library.
1. Open iTunes.
2. Press and hold the Alt-Option keys on your keyboard (Shift key if you are using Windows).
3. Click on View in the menu bar.
4. Click on Show Exact Duplicate Items.
You can now remove any and all exact song duplicates in iTunes. This will save you some hard disk space, and make your iTunes song library less cluttered with duplicates.
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