Hello.I have an old AV (Sony STR-DB930) who doesn't have HDMI port and a Samsung F5000 led HDTV.I have 2 different PCs, a desktop (asus M5 A97 R2.0 mainboard with toslink port for sound & radeon HD 7870 GPU with hdmi port for picture) and an asus X551 MA laptop with hdmi port.After carefully...