Take a look at TSreader (
http://www.coolstf.com/tsreader/) . It is not free 9full version is $99, but it is in my opinion single most usueful software for any DVB/mpeg2 hobbyist. There is a Lite version that will let you streeam for 60 seconds so you can use it to test what you need.
It can stream to VLC (which you an then use to stream to any other vlc client on your network).
I also use it all the time to stream over network to my Roku HD1000. It works great. The best part is for
HD streams no processing is done on the computer (all it does is take the stream and send it over the network) and then my Roku does all the dirty work. I can stream
PBS HD from AMC3/ku for days without any problems.