I think you're confusing the LivePro beat-detection plugin with the Winamp Laser Visualization plugin. The beat-detection plug-in only works with LivePro. You run Winamp, set it to monitor the line-in port, launch the LivePro plug-in, and finally you run LivePro and select the plug-in as the source for your beat detection. The LivePro plug-in doesn't create any laser patterns on it's own. You just use it to sychronize all your LivePro creations to an external source of music.
On the other hand, the Winamp Laser Visualization plug-in was written by the same guy that wrote Winamp and the AVS visualizer (Justin Frankel). This plug-in works very similar to the default AVS visualizer, in that it makes cool patterns that are synchronized to the beat. It has presets just like AVS does, and you can edit the codes to create new ones if you want.
The difference is that the Laser Visualization plug-in sends the output to both a preview window on-screen *and* to your Pangolin controller in real time. So whatever you see in the preview window is also what your laser projector is displaying. The patterns are rather simple, and are nothing like what you can do with LivePro, but they are still cool in their own right. The whole thing runs completely within Winamp, so you don't need to have any other software running. You just launch Winamp and start the plug-in, and if you have your projector hooked up it will start displaying pretty images.
I thought there was a version of the Laser Visualization plug-in that worked with the FB3... I don't have an FB3, so I can't be sure, but I seem to remember reading several posts from people that have it running on their FB3's... I know there is a version for the QM-2000 though, because I run it all the time.
EDIT: Upon further examination, it appears I was confused. There is no Winamp Laser Visualization plugin for the FB3. My mistake! The posts I was referring to were *asking* for the plug-in form the LD-2000 system to be ported to the FB3, but this hasn't been done yet.
Adam