Google releases GoogleTalk APIs
"Libjingle - Google Talk Voice and P2P Interoperability Library
Libjingle is a set of components provided by Google to interoperate with Google Talk's peer-to-peer and voice calling capabilities. The package includes source code for Google's implementation of Jingle and Jingle-Audio, two proposed extensions to the XMPP standard that are currently available in experimental draft form. "
...so many things to play with and so little time...