I have a Philips LED TV and a Logitech x540 sound system I use to have hooked up to my pc. I want to hook up my x540 to my TV using a sound blaster external sound card. My TV has a digital audio out (coaxial), and the sound card has a digital audio out (coaxial). I can hook up my x540 to the sound card using three cords (orange, green, and black) . Will this set-up work? If not what should I do?