at&t Wireless and Napster today announced the expanded availability of Napster Mobile. Now 13 million at&t wireless subscribers can now get the Napster Mobile Service.

Napster Mobile allows users to browse download and buy Music from Napsters collection of 6 million songs. Users who usethe service can pay a monthly subscription fee of $7.49 for unlimited music and or buy songs for $1.99. (A bit pricey if you as me) A digital copy of the song is delivered to their personal computer.

“Our goal is to connect people with the music they love, no matter where they are,” said Chris Gorog, chief executive officer of Napster. “Switching to our new format gives millions of AT&T customers the opportunity to enjoy the best mobile music experience available, in addition to the world’s largest catalog of music.”

Mark Collins, vice president of Consumer Products for AT&T’s wireless unit, said: “Music fans using our phones are hungry for this capability. As we’ve worked with Napster to make more phones ‘ready to rock,’ as we say, we’ve seen a strong corresponding rise in customers who are adopting Napster Mobile.”