I have a CD with a logo saying "opendisc" and "EMI CLASSICS CLUB". Underneath this it says: "Insert this CD into your computer to eccess the EMI Classics Club: access bonus material, exclusive pre-release listening sessions and more"

Does anyone know exactly what this will do to my computer? I've heard enough horror stories about stupidly-designed copy-protection efforts that there's no way I'm going to put a CD like that into my drive without understand the full implications. 

Has anyone used a CD labelled like this?

Thanks