As sub says, it is a bit rough but it provides some interesting potential for new client apps. Probably of most interest for potential developers but I've created a page on the wiki which explains a bit more about how things work and the various scripts.
Apologies to the Wiki keepers - I couldn't work out a better place to put it.
I've created an Android demo app which works OK (bearing in mind this is all experimental) - see the end of the wiki page. It plays music and video on my phone but needs relevant 3rd party apps installed. I'll be providing some limited support but no promises.
I've created a thread for developers and non-developers to provide a point for discussion...