IM TRYING TO PLAY MUSIC IN SURROUND OFF MY LAPTOP SAMSUNG ON A TECHNICS SA-DX 1050 AMP WITH A/V CABLES. ALL IM GETTING IS STEREO. PLUS SUB IS WORKING SO THATS GOOD BUT HOW CAN I GET SURROUND ? PLEASE ALSO KNOW MY HDMI PORT IS MISSING SO THAT IS OUT. HOPE THERE IS A WORK AROUND. THX