Today's race live on the Internet

www.tvunetworks.com, its on the 5360 Wheels network at the moment.

 

You can try http://www.soccer-live.pl/ITVF1/f1player.php or here http://www.f1stream.co.nr/ BUT ITV has limited bandwidth so it will prob wont work or will take ages to get on.

Other option is either use tvu player like tifosiron suggests or www.sopcast.com then goto http://www.myp2p.eu/competition.php?competitionid=&part=sports&discipline=motorsports for all the different channels.

I suggest Star Sports, best English commentary available.