I had a massive runaround with Amazon support over this a few months ago as they kept telling me different things, but I'm afraid the answer is no, Amazon Video on iOS does not currently provide a Dolby Digital 5.1 audio stream so when you AirPlay it you'll only get a stereo track.Since there is no native Amazon Video app and my current workaround is to airplay from my iPhone, does anyone know if this method supports 5.1?