I played with zoneminder a bit and wrote a simple java script to send a udp broadcast out over the network when motion was detected. This broadcast was received on the client side via a plugin which then brought up the vlc stream.
That was a couple of years ago and have lost all the code since then, but it is another way to do it.
That was a couple of years ago and have lost all the code since then, but it is another way to do it.