Jon Johansen’s PyMusique application which allowed purchasing and downloading of music from iTunes Music Store without the normal DRM attached was shut down by Apple, and now is back working again. PyMusique does not write out DRM to the song, leaving it unprotected and free to be used on an unlimited number of machines. Johansen says he wrote the program to allow Linux users to buy music from iTunes music store, the ability to move the music from machine to machine without the DRM is just a nice side-effect. Looks like this serve and volley will continue for a while.