Just set up Live TV on MB3 HTPC and things seem to work well. On the Roku side I have the Roku3 player and added the Media browser and media center channels.
What needs to be done to get an EPG within these channels? is there a side load app for roku? I added "what on" channel to roku but that's not very useful since it's a separate channel that you need open to see listings. Also, is there a Next PVR channel for Roku?