Two places I’m watching this morning are
“NASA live TV”:http://www.nasa.gov/multimedia/nasatv/index.html
which offers Windows Media Player and Real Player, thanks to Yahoo and Akamai,
and
“Live Launch Countdown Coverage”:http://www.nasa.gov/returntoflight/launch/launch-vlcc.html

This page is updated every few minutes so periodic refreshes are neccessary.

This is exciting stuff!