I have a MOTU 828 and an ADAT XT. I am able to record 16 channels at once by using ADAT optical input to the MOTU 828, but only by playing an ADAT tape. I would like to use the ADAT analog inputs and optical output into the 828. I have not been able to find a way to make the ADAT put the 8 analog inputs out the digital output. Seems like if I push the right buttons, this should work.