| The boom in digital music has left a lot of iPods to fill and made millions of songs available online. But how to choose which ones? Music recommendation services are using tech wizardry to solve the problem. It used to be so simple: Music fans discovered new songs by talking to friends or listening to the radio, then paid a visit to the local record store. But now, with online music stores like iTunes and Napster offering millions of often obscure songs, users are searching for a better way. Two of the most popular services, Pandora and Last.fm, take radically different approaches. Pandora (http://www.pandora.com) sets up a personalized online radio station based on a few favorite artists or songs, then adds new songs basing the selections on attributes of the music you've chosen. |
 
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