Unauthorized MP3 file sharing continues on next-generation peer-to-peer networks. Some authorized services, such as Beatport, Bleep, Juno Records, eMusic, Zune Marketplace, Walmart.com, Rhapsody, the recording industry approved re-incarnation of Napster, and Amazon.com sell unrestricted music in the MP3 format.
What kind of MP3 file sharing continues on? Beatport, Bleep and Juno records are examples of what kind of service? What kind of music is sold by these companies? Which format is used by the companies that sell the music legally?