Audio Optical Fiber Logitech Z-5500 5.1 Surround Sound System connection issue to my VAIO AR21-S Laptop.? Ive just bought a “Logitech Z-5500 THX-Certified 505-Watt 5.1 Digital Surround Sound Speaker System” At the moment im using a direct stereo cable from my laptop to the system but this way i cant use the THX, Dolby Digital [...]