BBC: iTunes 'biggest US music seller'

BBC NEWS | Business | iTunes 'biggest US music seller': "Apple's iTunes has overtaken supermarket group Wal-Mart to become the largest music retailer in the US, an independent study has said.

Market research firm NPD said iTunes surpassed Wal-Mart in January and February if 12 downloads are considered equal to the sale of one CD album.

Steve Knopper, a reporter for Rolling Stone magazine, said the news showed the big change in music retailing."