Pixelsumo have another report from the RCA design show in London. Matthew Falla's connect..draw..remix uses conductive ink and a usb-connectable CD case. You get the CD home, plug it into your computer, then draw on the sleeve with a pencil, which allows you to remix the track. I suspect big labels are desperate to find ways to get people buying their plastic discs, so they'll be on the phone to Matthew very soon.