Apple said on Thursday its iTunes online music store has surpassed Wal-Mart Stores to become the largest music retailer in the United States.
Apple’s statement, citing industry data, came on the same day that iTunes faced a new challenge as News Corp’s MySpace social networking site said it had formed an online music venture with three record labels.
MySpace Music is a joint venture with Sony BMG Music Entertainment, Universal Music Group, and Warner Music Group, according to the News Corporation-owned website…
