Idolator has more on iTunes rise: According to research by the NPD Group, the iTunes Store was the second-largest music retailer in the United States last year, behind only Wal-Mart. iTunes leapfrogged over Best Buy and Target--which came in second and third, respectively, to iTunes' fourth place the last time the NPD Group conducted their music-buying survey--as paid downloading experienced an overall spike of 50% between 2006 and 2007.

Those downloads now make up 10% of all music sales, although unsurprisingly the rise in downloads didn't make up for the plunge experienced by CD tallies throughout the course of the year. - more on this story

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