I have a had look at X3 demo .. and find the browser great -but! why doesn't the browser show the images for the icons?
It might be my computer - maybe there's a plugin missing?
I really do like the fact that you can drag the icon files from the browser in the track view and they consequently appear in the console view but its a bit odd that you don't know how they look until you've place them there?
 
Also, a feature request for future -  to be able to drag icons to console view from the browser would be a slick improvement.

I have the full version of  X3 and i can see the icons. Maybe the Demo doesn't allow you to see the icons or maybe hen you installed the demo, you forgot to specify here the icons should be and where sonar should look for them. It can also be your browser settings in your pc.
 
CJ