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[…] iTunes Store leads the pack with 19 percent, Wal-Mart (which includes the brick-and-mortar stores as well as its online properties) is second with 15 percent, and Best Buy is third with 13 percent. Amazon is a distant fourth at 6 percent, trailed by the likes of Borders, Circuit City, and Barnes & Noble. Rhapsody is in the tenth slot with 1 percent.
Apple passes Wal-Mart, now #1 music retailer in US