You can’t really have effective copy protection on any disc that can be played in a basic CD player; they’re just too simple.
So Sony’s approach was to put an autorun installer for a ‘music player’ on the disk too. If installed, it attempted to lock your CD drive from being used by any other software and couldn’t be easily uninstalled. And they pirated open-source software (yes, that’s possible) to build it.
SMH My Head.
Oh, indeed. I’m just pointing out that terrible & illegal DRM is hardly a new practice.