It has come to attenttion that record company Sony BMG uses a copyprotection software that has some shady things going on.
When you put your music cd in to your computer and try to play it, the cd asks you to accept a license and it will install a "player" which in truth is actually a malware program or "rootkit." The program tries to hide itself from the user and from possible security software.
Removing the software without Sony's help will in many cases have conflicts with your operating system and/or hardware.