Tim over at Canadian Linux Nerd mentions the DefectiveByDesign Freedom Rings day of action in post that highlights some of the problems with DRM in music.

...he'd bought a new CD but it refused to play on his Mac. I asked him to read me all the labels on the CD and sure enough it had a "Plays for sure" label. I explained that this meant it would for sure not play on his Mac and advised him to return to HMV where he bought it. He was of course enraged by this, I pointed out that he had in the past told me I was being unreasonable for fighting DRM and that he thought that the Digital Restrictions Management on his iTunes music store music was reasonable even though such music can only be played in iTunes or on his iPod. Since then he has converted all his iTunes music to CD and signed up for Defectivebydesign.