I'm trying to run my main out through the SPDIF out while using an external ADC (spdif IN coax) and my external DAC (spdif out coax).  I have the main output set to SPDIF and want to route all of my inputs (AN1/2 computer in, etc).

I am able to hear the AD source through the DAC but cannot seem to get anything else.  Is there something in the spdif standard that won't allow anything but my ADC through spdif out?  Is there a setting in Total mix that will allow all sources, external and internal, through the spdif out?  I'm still looking at combinations in Total Mix submit mode but I'm beginning to think this is not possible.

thanks,

Scott