PUBLIC MARKS with tags streaming & "music subscription services"

"While many people continue to consume music by purchasing it—on CD or via electronic emporiums such as the iTunes Store and Amazon.com—some also use music subscription services to get their daily musical fix. Once confined to the Web, many of these services now make their tuneful content available via iOS apps. Among them are Mog, Napster, Rdio, and Rhapsody. But what—other than more music than you can listen to in a lifetime—do you get for your money? Tune in to find out."