Help with 5.1 Audio Out via TosLink Optical Cable

My Mac mini is connected a Vizio 5.1 sound bar with a TosLink optical cable. In the Sound preference pane, the name of the device for sound output is "Digital Out". However, when I go into Audio Midi Setup, the Built-In Output shows "0 in/2 out", and if I click the Configure Speakers button, I only have the option to choose "Stereo" from the Multichannel pull-down menu (regardless of the Format I choose).
Why doesn't my Mac mini recognize my sound bar as a surround sound-capable device and send it a 5.1 audio signal?

I'm not sure I completely understand the solution described in your link, but I followed the instructions and it did not solve my problem. I think one issue is that I'm not given the option in the Format pull-down menu to select anything other than 2-channel audio.

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Yes.
http://www.griffintechnology.com/products/imic/

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56

When you're connecting 2 digital devices via a digital audio cable you need to make sure they are running off the same clock, otherwise you will suffer from something called jitter. Jitter can manifest itself in a number of ways depending on its severity. Because both the devices you are using have good stable clocks you're not hearing it most of the time. But when their clocks do slip out of sync with each other a number of bits are getting read at the wrong value, which causes a click in your audio.
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Message was edited by: Searmusic

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Quote from: crazy on 09-June-06, 15:51:46
You may tell us more information about your mainboard, please give us the detailed name of your mainboard. :D Then there will be more users could give some suggestions.
Sorry, there aren't that many K9N boards out there, but mine is the K9N Platinum MS7250 Version 1.0. It's the AM2 non-SLI nVidia nForce 570 Chipset model.
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Help with 5.1 Audio Out via TosLink Optical Cable

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