I have a Asus M5A78L-M/Usb3 Motherboard and a evga 650 ti boost graphics card. I want to run my audio through my motherboard. But the spdif isn't showing up on my playback device menu. Just hdmi. How do I fix this. It use to work but I wasn't the one who set it up. I have windows 7 64 bit to if that helps at all. When It worked b4 on my receiver it was coming out as pcm audio. If you need to know any other spec let me know.