Can the XR 15 Remote be paired with an audio receiver - just to turn power on and off and adjust volume? My ancient silver Comcast remote can do this and the XR11 can also do this - but I looked online and when I look for the code - the Comcast website takes me a page that talks about pairing with the cable box and with a TV but no mention of audio receiver. It does not make sense that the newest remote would not be able to do this function. Any help is appreciated. Thanks.