Drew,have you tried renaming the files to another format.( i.e .txt .bmp .jpg,)then try deleting them. Or open notepad,then put any text in it and save it using the same name and extension as the vid file,and copy it to the folder where your vid files are.It will then ask if you want to overwrite the original.Once the file has been overwritten you should be able to delete it. Also,have you played the vids in other movie software,Windvd,PowerDVD,etc. Open those programs and clear the playlists.