Hello, I have a home theater setup that works great. I currently have a roku and shieldtv connected to tv hdmi inputs with audio through receiver hdmi connected to tv. I tried connecting both devices to hdmi ports on receiver and get better surround sound this way. But right now I have a blutooth transmitter for earbuds for quiet listening. When connecting devices to receiver hdmi, cannot get sound to earbud transmitter. Purchased an analog to spdif adapter and plugged to headphone jack and also tried tape deck out rca out on receiver. Didn't work. Is signal output too low for this to work? Any suggestions appreciated.