I've just uploaded a new document covering performing callbacks from server. See http://birmi.sourceforge.net
I've just uploaded a short tutorial about making calls from client to server. It's on the project www: http://birmi.sourceforge.net/
In next part I'll cover making callbacks.
I've also committed new examples to svn.
Source code is now in SVN.
The first public alpha release is available.
Feedback is greatly appreciated.