CD's aren't selling well for several reasons (according to the record labels it's just one reason, but that is a gross simplification). The new thing on the block is selling ring tones and backgrounds for cell phones. That's not news, but something new is the use of SMS as a communication technique:
" Madonna and other artists already send text messages to cell phones on new albums or tour dates. Nelly sent similar ones to fans who had submitted their numbers at concerts."