Dupe Away is the fastest, easiest and most powerful iTunes duplicate remover app for Mac and PC. It instantly cleans duplicate tracks, playlist entries, missing files and more.

Features:

Clean Music & Video File Dupes
Dupe Away instantly finds the dupes in iTunes and, based on your preferences, automatically determines which duplicate to keep and which to remove.

Detect Unused Files
Ever wonder how many tracks exist in your Music folder that aren't in iTunes? We call these "abandoned tracks." Dupe Away detects these files for you so you can recover the file to iTunes or recover the disk space being wasted by it.

Instant Playlist Cleanup
Hate listening to the same song back-to-back? So do we. Dupe Away playlist feature analyzes all of your playlists individually and finds and removes those dupes within your playlists so you don't have to.

Remove Dead Tracks
If you've ever moved or deleted media using Finder (or any other app that's not iTunes), you may be left with some tracks that won't play in iTunes. With the touch of a button, Dupe Away cleans those tracks from iTunes so you no longer have to see that annoying 'file not found' dialog.

Requirements:
OS X 10.6+
64-bit Intel