emusic is a subscription-based service that allows consumers to own, not rent, their entertainment, eMusic is the largest service to sell music — and the first service to sell audio books – exclusively in the popular MP3 format. (MP3 is the only digital format that is compatible with all digital audio devices, including the iPod? and Zune ?.) eMusic targets and successfully direct-markets to consumers who are sophisticated, tech-savvy and knowledge-hungry, dramatically expanding the sale of catalogue widely known as ?the long tail.? Since Dimensional Associates acquired eMusic in 2003, the company has more than tripled its subscriber base and sold more than 200 million downloads.