SPDIF Source?

I just got my up2Stream Pro and SPDIF In board, everything seems to be working, except I can’t figure out how to change the source to the optical in.

Any advice?


It may be that you have to set the s/pdif option to RX as opposed to TX in ACP workbench?

Do you need ACP workbench to enable the SPDIF? I thought you had to pay for a license for that software?