7. A system comprising: a processor; a storage medium for tangibly storing thereon program logic for execution by the processor, the program logic comprising: logic executed by the processor for creating an association between each of a plurality of media objects and temporal, spatial, social network and topical data including deriving relationships between specific media objects and metadata sources associated with a specific media object, user profile data, social network data and interaction data; logic executed by the processor for receiving a request from a requesting device associated with a user for media matching each criteria of multiple criteria included in a combined context, the combined context defined by social criteria, location criteria, topical criteria, and temporal criteria included in the request, the social criteria describing one or more people or types of people associated with the requested media, the location criteria describing a location or type of location associated with the requested media, the topical criteria describing one or more topics associated with the requested media, and the temporal criteria describing a past time period associated with the requested media; logic executed by the processor for; locating a user profile associated with the user including one or more designations of favorite media of the user; logic executed by the processor for determining media associated with the one or more people or types of people defined by the social criteria based on the association; logic executed by the processor for identifying a location associated with the request and determining media associated with the location based on the association; logic executed by the processor for identifying topics associated with the request and determining media associated with the identified topics based on the association; logic executed by the processor for identifying a time associated with the request and determining media associated with the identified time based on the association; logic executed by the processor for locating a plurality of media files that each match each criteria included in the combined context based on the located user profile, determined media associated with the one or more people or types of people, media associated with the location, media associated with the identified topics, and media associated with the identified time; logic executed by the processor for assembling via the network a playlist containing a reference to the plurality of media files; and logic executed by the processor for transmitting the plurality of media files on the playlist over the network to the requesting device.
11. The system of claim 7 wherein the context criteria specifies the physical location of the requesting device, and when the physical location of the requesting device changes, the program logic further comprises: logic executed by the processor for detecting a change via the network in the physical location of the requesting device logic executed by the processor for determining media associated with the physical location of the requesting device; logic executed by the processor for locating a second plurality of media files that each match each criteria included in the combined context based on the located user profile, determined media associated with the one or more people or types of people, media associated with the physical location of the requesting device, media associated with the identified topics, and media associated with the identified time; assembling, via the network, an altered playlist containing a reference to the second plurality of media files; and transmitting the second plurality of media files on the altered playlist over the network to the requesting device.