nope, no extenders. I just use it to play avi/mkv/mp4 and so on stored on another machine via a wireless n network and have 2 tuners in it, one dvb-s doing freeview and another pvr-150 linked via rca cable to a settop box doing australian tv. Even the network access speed seems faster browsing though the folders as there are 2 x 2tb drives of media stored on another pc that I view from the MCE PC. Very fast scrolling through the folders.
Its all working well, im very happy with win8, using the shark codec pack and mce standby tool with classic shell and mce buddy. Its been perfect for over a week now except the odd tv3 glitch but i had that prior to the upgrade too.