Well, I've learned the dsp_map=3 switch does indeed do something. 
Changing it's value causes an "oss" file to appears under pcm2p, pcm3p, 
based upon this switch.

However, I never get sound out the spdif port.

How does this work anyways?  How does the pcm get converted to a digital 
stream out the spdif?

Jim

Jim Duda wrote:
> Can anyone explain how I can get the PCM sound normally sent through /dev/dsp 
> to route out through the SPDIF port on a 
> SoundBlaster Live! (emu10k1)?
> 
> I've seen one posting which claims that all I need to do is add "options 
> snd-pcm-oss dsp_map=3" to modprobe.conf. 
> Unfortunately, that doens't seem to work for me.
> 
> Can anyone offer any advice as to how to debug or figure out how what needs 
> to be done?
> 
> Thanks,
> 
> Jim 
> 
> 
> 
> 
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