I have an older receiver (Marantz SR4001) that is capabale of DD5.1 and DTS. The Stream automagically figured out my receiver's capabilities, judging from what is has turned on automatically in the sound settings. Yet, I only get PCM (stereo, of course). In the stream homescreen, in Netflix, in Amazon, in Youtube. I can plug the main Tivo (Elite) into the same HDMI port and I instantly get DD5.1 surround (and of course, DD5.1 surround works with the main tivo for Netflix and Prime). So, thoughts on what's going on? I've tried different combinations of auto/manual, turning Dolby sound effects off/etc., and I still just get PCM stereo and not DD5.1 surround. Thanks for any help!