The files aren't in use, and I can delete them from safe mode, but I don't want to go through that hassle every time I have to delete a folder. As well, since the files inside the folder are the album art files, it doesn't really show up despite viewing hidden files. In regards to the file attributes, they are set as anybody can edit them, and I have permissions to edit the files. It's really annoying why I can't delete them....