My rx-v2500 will detect 5 channels when playing a blu-ray or dvd disk. It will also detect 5 channels from an on-line network channel from my OTA tv antenna. I had an old roku box that I believe was limited to just 2 channel stereo. Has anyone here got their "older" AVR rcvr to detect 5 channels from any new streaming devices? I am using the optical output on the roku box connected to one of the optical inputs on the 2500.