Patent ID: 7262357

Claim:
A system comprising: means for monitoring multiple users' media-playing experiences using a first device on which one or more users can experience the media; means for identifying each of the users with an identifier, each user's identifier being recognizable by its associated user, but not being mathematically reversible to ascertain the associated user's actual identity; means for producing metadata associated with the users' media-playing experiences; means for associating produced metadata with media content experienced by the users; means for maintaining, for individual users, at least the metadata in a database on the first device; means for updating metadata on at least a second device that can be used by one or more user to experience the media, said means for updating providing metadata from the first device to at least the second device; and means for using the metadata to automatically personalize one or more playlists on the first and second devices for at least one of the users to reflect a user's media-playing experience.