if you drag the same item to the list twice (for example when you have two references to the same file in iTunes) and run delete duplicates, it deletes the file.
Additionally it would be nice if delete put things in the trash/recycle bin instead of blowing away four albums 
[quote=mjc]if you drag the same item to the list twice (for example when you have two references to the same file in iTunes) and run delete duplicates, it deletes the file.
[/quote]
I dont follow, drag the same iterm from where to where, delet duplicate is meant to delete duplicates, r u saying it ius deleting all copies of the file ? logs would be useful.
[quote=mjc]
Additionally it would be nice if delete put things in the trash/recycle bin instead of blowing away four albums :/[/quote]
Yes this on the enhancement list as #1077:File should be saved to recycle bin