Hi,
First of all, make sure you can access the stream from another PC on the same local network. You will need to access it using the local IP address of the PC running broadwave. If you can't, then look at the firewall on that PC.
When you can access the stream locally, then try to access it using your public IP address, and sort out your router settings (NAT port redirection, etc).
Have a look at responses to other posts to get a list of things to check.