Apple Inc.'s iTunes Store recently cruised by online retailer Amazon.com to become third largest music retailer in the United States, according to a new study from market research firm NPD Group.
Apple trails only industry leader Wal-Mart with 15.8 percent and runner-up Best Buy with 13.8 percent. By comparison, Best Buy's online music store, which is restricted to digital tracks like iTunes, garnered only a 1.1 percent market share.
NPD attributed Apple's gains to stellar iPod sales during the past holiday shopping season.
Upon last check in November of 2005, Apple ranked seventh on the list of leading U.S. music retailers, having then passed Tower Records, Sam Goody and Borders to crack the Top-10 for the first time.
According to NPD, digital music downloads during the first quarter of the year accounted for only 13.8 percent of all music purchases. The remaining 86.2 percent were sold in physical disc format.