I've been watching with amusement the tale of Sony, whose copy protection system on some CDs they sell installs nasty unremovable malware on your computer.
As nasty as that is, I think it's trumped by aspects of their EULA. Apparently, according to Sony, if you declare bankruptcy you are legally required to delete all your music.
You can't make this shit up.
Needless to say, I'd recommend not buying any Sony CDs in the future.