How to set up surround sound with digital cable?

Hi. I have a samsung blu-ray/ 5.1 surround sound combo set that I'm trying to set up with my PC. I have it plugged in to my computer using a digital cable, and the sound is working but its only coming from the 2 front speakers. My realtek driver and the computers audio properties won't allow me to set up surround speakers. What do I need to do to get sound to come from my surround speakers and subwoofer? Or is it even possible? Thanks for any help!

 

-Tanner-

I think you need to have something which will encode your audio in to dolby digital or DTS. I know some sound cards to this on the hardware but I'm not sure if there is a way to do it with software. As far as I know you won't be able to use the digital cable for more than two channel PCM audio, which is what it's currently doing.

My temp fix for you is to set your amp to 5ch stereo. But I know you want your surround so...

If you are 100% sure you're using a 5 channel audio file and you're 100% sure that no sound will come from your sub or your surround speakers AND you are 100% sure your onboard audio supports 5.1 then this screams a driver problem in my eyes.

Maybe a driver update or re install might fix it. I know when I was using my realtek onboard with optical audio it would work, granted I was using a 5.1 file, if you're using coax make sure it's the proper coax cable.

Also (this is a big one) if your amp is set to stereo or if your quality is set to 96khz or 192khz (on the pc) then I highly doubt an all in one samsung setup will support those formats in 5.1 it usually defaults to stereo at 96/192khz (but the sub should still work). If you have it set to 44/44.1/48khz it should work in 5.1 and if not, well I recommend a driver re-install and if that doesn't work a 50 dollar audio card might be the solution assuming all your settings are correct.

I see it has built in dvd so try that, make sure the dvd is set to 5.1 in the audio setting (sometimes it doesn't have the option and it is automatic) and if you still only get 2 speakers working double check all the connections are hooked up properly and if you still have no luck then you know your amp is faulty. If it does work with the dvd then you know its your pc.

Also just a surround tip, if you're playing music the surround shouldn't work... if it does though, set it to stereo otherwise it will put to much stress on the center channel and you could blow it, usually.