I have a Roku Express connected to a TV via HDMI, and the TV is connected to a minidsp Flex 8 in my audio system via SPDIF. I can listen to the audio from a TV show or I can connect my iPhone to the Roku via Airplay and listen to Apple Music. It seems like this is a very inexpensive Airplay music streamer, free if you want to use the Roku for video streaming. Is there a problem with the fidelity that I am missing? Thanks for your time.