If you want something like it why don't you build it? It's pretty easy.

There are users that have build those scripts (like me). It's the sharing part that's the problem. I have no problem sharing my scripts with others that share aswell (Barry, Lyndel, etc). I would love to make a community effort out of it, but no one seems to want too. I understand why Barry doesn't he uses a slighty other approach by only using TCP, I use UDP aswell, but both methodes could be easily integrate in a single module and settable with a parameter. I only use UDP to be able to see when a poll is really necessary.

And the XBMC music script you mention isn't perfect, there are much better ways to do so with XBMC.