ok so i just spent $900 on a brand new Yamaha HTR-6090 and the guys at best buy said i can hook up my Logitech Z-5500 Digital 5.1 surround sound speakers to the optical out and hear them just fine....but i tried the optical out for the CD-R and the MD and the 5500 unit says No Optical Output ????? ok so does anyone know how to configer this 6090 to output all audio to the CD-R optical output or the MD optical output ?? THX IN ADVANCE :D