Robert: Since you just purchased your Roku, I assume it is one of the new models without the optical output. I don't know if it is worth it to you, but you may want to investigate some of the HDMI switches that include a toslink or coaxial output. That would enable you to use any new device that only outputs digital audio on HDMI with your 990. Another alternative would be to buy an older XD/S model. They appear to be available new on ebay.