http://news.bbc.co.uk/2/hi/technology/2502399.stm
In essence, say the researchers, file-swapping systems have already won. The only way for music companies to compete is on the same terms by making music easy to get hold of and cheap to buy.
Evidence gathered by critics of the music industry has shown that CD prices have steadily risen over the past few years and may have contributed to the slump in sales as much as the rise of file-swapping systems.