28.04.2010 18:05 Uhr, Quelle: AppleInsider

Digital music grows $363M in 2009, iTunes a quarter of all U.S. sales

Though overall music sales declined $1.3 billion in 2009, digital downloads grew $363 million to $4.3 billion, with Apple's iTunes representing more than a quarter of total digital and retail U.S. sales.

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