[mythtv] [PATCH] Big audio update redux

[Robert Kulagowski]

> Hi, Thanks for the volume control stuff.  I think we need to think 
> multichannel and break out the interface a little.  Could you please 
> revisit this patch with the following changes:
>

Will this allow choosing of the SAP stream?  I had implemented the 
"Seperate Muting of Left and Right" function when users were receiving 
DUAL audio channels versus STEREO.  This way, they could at least get 
mono versions of lang 1 or lang 2.  Since I don't really use the 
function I never did anything else, like making pseudo stereo by copying 
the active channel to the muted one.

This doesn't do anything about SAP though, since that's a whole seperate 
stream.  Not sure if SAP even falls into the "volume" part of mythtv, or 
if SAP should be handled at a different layer.