Patent 7680814 was granted and assigned to Microsoft on March, 2010 by the United States Patent and Trademark Office.
Grouping media files via playlists on a computer-readable medium. One or more media files are selected according to a grouping criterion to define one or more playlists from the media files. A folder is associated with the playlists and stores values identifying each of the playlists associated with the folder along with references to each of the playlists.