Rhapsody launched its own MP3 store today, joining the ranks of Amazon MP3, Napster, and a slew of others competing in the unprotected digital music market. Rhapsody’s MP3 store is available in public beta form today, and sells music from the Big Four (Universal Music Group, Sony BMG, Warner Music Group, and EMI) in addition to a slew of independent artists. Individual songs can be purchased for the typical 99¢ apiece and most albums land around $9.99, on par with most other online music services.

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