HT2905: How to find and remove duplicate items in your iTunes libraryLearn about How to find and remove duplicate items in your iTunes library
Currently Being ModeratedFeb 6, 2013 7:16 AM (in response to Bridgesfromtx)
Show duplicates was missing from iTunes 11.0. Upgrade to iTunes 11.0.1 if you haven't already done so. Use Ctrl+B to display the menu bar if needed.
The show duplicates features are now found under View > Show Duplicates Items or, more usefully, Shift > View > Show Exact Duplicate Items. You need to manually select all but one of each group of repeated items to remove. Don't delete from the hard drive unless you know there really are multiple files instead of multiple references to the same file.
There is also my DeDuper script which automates the process, merges ratings and playcounts and should handle the deletions properly. Please take note of the warning to backup your library before deduping. See this thread for background.