Exporting your duplicate tracks step by step:
Select the operating system for you iTunes LIbrary to get the correct instructions:
Instructions for Windows
1. Open Itunes (make sure you are viewing your library)
2. Shfit+Click on the File menu and choose Show Exact Duplicates
3. Select all the tracks in the list (Ctrl+A)
4. Click on New Playlist from Selection in the File menu (Ctrl+Shift+N)
5. Right Click on the playlist's Name and choose Export... (as a text)
6. Find the file in your hardrive, open it with Notepad and Save As... choosing Encoding: ANSI (in the save as popup). Accept Replacing the old file. (A warning might appear saying the Unicode format will be lost, just click OK).
