For Mac users, unknown artist and albums, duplicate songs and missing artwork -- if these describe on your iTunes music library, you can try this Tunes Cleaner for Mac to fix all of them. It's described as the most practical and easiest-to-use iTunes cleaner program to clean up iTunes music library.

Watch Video:
http://www.youtube.com/watch?v=iycV6XZmhRs


Leawo Tunes Cleaner
> Clean up iTunes and external music folders smartly
> Get album artwork for iTunes music library and other music files
> One-click operation to delete duplicates in iTunes and other music libraries

For PC : Windows XP/Vista/7/8
For Mac : Mac OS X 10.6 - 10.9 Mavericks