Please solve my problem i have Gigabyte Z77 MX-D3H Mother Board. My board has SPDIF Audio port at back side. i connect this SPDIF port with my SONY BDV-3200 Home Theater with Optical cable but my CPU output only in 2.1ch sound on all 5.1ch movies, Games like NFS Most Wanted 2012, Battlefield 3 ,4 ,farcry 4 and Max Payne 3. Please solve my 5.1ch output problem. Thanks