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...http://www.google.com.au/patents/US7680814?utm_source=gb-gplus-sharePatent US7680814 - Navigating media content by groups
