I'm sure the Maroon Devils Network will have the live stream of the Swain-E. Wilkes game online here: http://www.maroondevils.com/watch-live/ . They charged for the video stream this year, but the audio-only broadcasts during the playoffs are free.
WTOE.Com will also carry the Mitchell vs. Mt Airy game if you want to hear the game with a Mitchell bias, you can also find WTOE on the tune in radio app on smartphones.
WIFM radio 100.9FM and streaming live at www.wifmradio.com will be broadcasting the East Wilkes-Swaim game but will be providing live updates, as they happen at all the area games