It is already a done: iTunes, Apple's music sales portal, became the biggest store of music in the United States, ahead of Wal-Mart, according to company sources.
That is, what in digital It won the physical wrestling: with about 50 million users, iTunes has sold 4 billion songs so far, in addition to managing the largest music catalog in the world, with almost six million songs.
The figures are incredible, although just now a competitor came out: it is myspacemusic, in which the social network joined three dicographies to offer free and paid music and video, posing a real threat to iTunes, in addition to the recent Music Store from Amazon.