These links really helped me get this working.

http://www.gamespot.com/pages/forums/show_msgs.php?topic_id=26337678

http://www.unplggd.com/unplggd/how-to/how-to-stream-any-type-of-video-to-your-playstation-3-046182

http://tversity.com/support/faq/

In the end, my problem was with their software, but it also runs in a browser.  That’s how I ended up getting mine to work.

If this is still not working then simply open a browser window and type the URL http://ip:port/admin(where ip is the address of the machine on which the server is running, it can be localhost when the server and the GUI run on the same machine and port is the port on which the server is listening, this is by default 41952). This should open the GUI inside the browser, and you can now save this shortcut to the desktop and use it from now on to start the GUI.