Importance

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Abstract

Music tracks are made available to users at no cost because advertisements are automatically intermixed between the tracks. Free music tracks, ads and machine readable instructions for playing the ads are downloaded from a central computing system to digital media players. Portable digital media players are well suited for practice of the invention. After a track is played the digital media player checks the ad-play instructions to determine if an ad is to be played. If so, the appropriate ad is played, if not, the next track chosen by the user is played. Logs of ad play and track play are maintained on the digital media player and uploaded to the central computing system. Wireless communication between the digital media player and the central computing system are well suited for practice of this invention. The data from the logs is aggregated by the central computing system and used to charge advertisers and compensate copyright holders in the music tracks.

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First Claim