Steve Jobs published a short essay named ” Thoughts on Music” criticizing concepts of DRM protection for media files. You can access it here: http://www.apple.com/hotnews/thoughtsonmusic/
It is interesting to see this sudden change because previously Apple always tried to use various types of protection to restrict iPod and Apple users. I think that more people will be interested in purchasing music online if the idea takes off and other manufacturers and media companies drop DRM techniques they use.