Yup, and as well as checking that, make sure that when you deleted the music files (assuming you did so using your PC/Mac), you also emptied the trash/wastbasket/bin on that machine. To be sure, re-attach your Clip to the machine on which you deleted the files, then have a look in your trash/wastebasket/bin and delete them from in there as well. Hope that makes sense, it’s difficult to be more specific as you mention both a Mac and a PC (and I don’t use either!).