Does anyone know how to configure the HDPVR 1212 to use SPDIF instead of RCA audio? The wiki has a procedure, but it is out of date (to the point where I can't even use it as a general guide).

It records stereo just fine, but I want it to use the optical input.

This is not really a mythtv or mythbuntu question. That is the OS I'm using, but I'm just looking to cat the /dev/video2 to get an output with audio captured from the optical port.

I'm running 10.10 32bit (for now).