How to get rid of duplicates?

Theres no real way to quickly delete duplicates, but you can quickly view your duplicates by going to (I THINK) iTunes->Show Duplicates. I have a PC so for me it's File->Duplicates but regardless, it's in the top toolbar for you somewhere.

Once you are seeing your duplicates, sort by artist, and I'd say just hold control and select every other file (so one of each duplicate) until one of each is selected for all of them and then delete as usual. It's not the fastest but it's the easiest way I can think of. Maybe someone else has a better idea?

You can also look at the duplicates sorted by Date Added. Sometimes duplicates are generated by the same activity on a particular day. If that's the case, you can select all duplicates added on that particular day, then delete (assuming that the other library entries are valid and playable).

How to find and remove duplicate items in your iTunes library - [http://support.apple.com/kb/HT2905]

http://www.araxis.com/find-duplicate-files/ (free trial)

http://dougscripts.com/itunes/itinfo/dupin.php (commercial)

Also check for free duplicate handling scripts in Dougscripts.

Always check a duplicate before deleting. I find a significant number of my duplicates are two versions of a song by an artist (e.g., live and studio recordings, songs appearing on multiple albums) and aren't really duplicates.