Help Multiple duplicates being synced to ipod

Hi I have an Ipod classic that's causing me trouble. It has been syncing multiple duplicates and I can't figure out how to fix it. Example the artist "alkaline trio" appears six times in the artist list one right after another, when I click on each separate one I confirm they all have the same albums and songs. I have tried complete restore and resync but this seems to duplicate the duplicates. IE I started with two duplicates but restored and resynced twice and ended up with six duplicates. I have searched but failed to find a resolution any help is greatly appreciated.

via iLounge Forums http://forums.ilounge.com/ipod-classic-legacy-ipods/279817-help-multiple-duplicates-being-synced-ipod.html