I am switching over from a Win7 box running MBC to Chromecast dongles. With the Win7 box I had a HDMI to Cat6 setup that allowed me to stream to up to 4 displays/TVs simultaneously. It was great while it lasted, but involved stapling cables to the ceiling to run it from room to room - plus it has borked   Can there be an option to multi-cast to several receivers at once? i.e. simultaneously play to Chromecast dongles in my office and living room and kitchen simultaneously so i can walk from r