There's no mention of any brand of audio device in your Belarc info, which means there is no driver installed (belarc gets most of it's device info from the related drivers).
Go to the Shuttle downloads page here:
http://global.shuttle.com/download.jsp
Your motherboard is model AB60, so select "Motherboards" where it says "Select a product", wait till it refreshes, then choose one of the 'AB60' models below that. There are 3 or 4 'AB60' motherboard models so try the first one unless you know the exact model you have. Now click "next". On the new page you should see four tabs. Click on the "Driver" tab. The download contains all the motherboard device drivers in one package. In it should be the audio driver.