I have a external folder from which I have added a lot of music to itunes. But I notice one interesting thing, when I delete the files from this folder they are still active and playable in Itunes. Does this mean that if I deleted them all they would still be active in Itunes? And is it because I have the option checked off to make duplicates in the Itunes folder? I am asking because I would like to secure more HD space without compromising my files, but if they are duplicated I should have no problem, right? Any clarification before I proceed?