Orang Utan
Maybe I like the misery
This this one. Corral iTunes Dupes v1.0
http://dougscripts.com/itunes/scripts/ss.php?sp=corralitunesdupes
Brilliant - thanks - that's saved me loads of time!
ETA: I'll still have to go through my iTunes folder to delete the files there, won't I? Or does that programme corral the files in the folder too?

