Not sure what's the most shocking part about this news - the fact that iTunes is so big, or the fact that it isn't already the number one. Second only to Wal-Mart (the American ASDA) when it came to shifting "product" during 2007, iTunes has also now overtaken Best Buy (the American Dixons) to shuffle up a place in the sales league. iTunes is not just a little thing hardcore Apple fans use any more. Also, during 2007, the statisticians at NPD said legal...