I don't use Ubuntu - SuSE is my main Linux distribution and Fedora my second - but you stream in Linux exactly the same as you do in Windows.
In your browser (Firefox or Konqueror, it doesn't matter which), open your DB web interface . i.e. if your DB IP is 192.268.0.2 go to
http://192.168.0.2/
This will open the web interface, and will present you with your station list. Select the station you want to view, click on the "view" icon and VLC should open up and start playing it.
The only thing you have to make sure of is that VLC is associated with .ts files, but it does this automatically when it is installed
It works just fine for me!