Desktop surround sound issues

My dad recently gave me a sony blu ray and surround sound system that he was not using. The model is bdv-is1000, it is a 5.1ch system with the s-air wireless surround speakers. I connected my computer to system via an optical cable. I positively sure I set up everything correctly. On the wireless s-air speakers I am getting a full green light an no pairing light in the back which should mean theres no problems with the wireless set up. When I set the receiver on the tv function (I am hooked up the the tv optical input) it only plsay out of the three front speakers and the sub. Does anybody know how I can get all the speakers to play? I've seen similar threads of people only having the front three speakers play too.
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  1. Best answer
    what soundcard?

    a lot of receivers need an encoder for the soundcard to forward 5.1... DolbyDigitalLive 5.1 or equivalent.
    check the website for your soundcard drivers and look for a dolby digital encoder
  2. No sound card, do I need one? My mobo has optical and i've read about other people not having a sound card using optical to a receiver and playing out all five speakers. I don't really care about actual 5.1 I just want all speakers to be firing.
  3. Best answer selected by ryfry.
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