More proof that Sony is attempting to take over the world, tho this time its through slightly more scrupulous means. Their latest copy protection system on audio cds installs some software on your pc which forces you to use their crappy media player. In doing so they also install a device driver which hides files beginning $sys$. It may seem quite harmless but harmless it is not.
Read more about it at:
SysInternals Part I
SysInternals Part II
The Register