[request] Any way to add add-on content to your library?

Hi,
I mostly use XBMC for its great streaming capabilities - with all those add-ons around...
but obviously by that I lose the "wow factor" - the way people organize their library to be synchronized with XBMC and the result of this is a beautiful beautiful VOD like interface...

as in here --

http://forum.xbmc.org/showthread.php?tid=76954

Just beautiful, but since I don't download movies\TV shows anymore there's not much of a library to apply this skin to...

But maybe there is some way to add add-on content to your library, from one "add on source" or from multiple?
That, for example, I'll have Family Guy in my library, and when I play it I will be directed to the streams (from the add-on) somehow?


Thanks in advance.