Despair.
I get analog audio from a browser and from Audacity, but NOT from either Rhythmbox or Banshee.
Baffling.
So, if I CAN'T get this to work at the system level, is there a way to add an external appliance (a DAC? a ubuntu capable external sound card?) to which I could feed either a USB or SPDIF and would passthrough the SPDIF and also output analog? I suppose I wouldn't need the passthrough if the DAC was of the same quality as that in the Onkyo.
But, you know, looking for cheap, not some stupidly expensive DAC.