Wow. This could be something great. These guys appear to have built exactly what I've been imagining. Using open source software, they have created an integrated home automation system that integrates many of the technologies that I have been planning to use. It uses MythTV for media and Asterisk for telephony and VoIP. It integrates proximity detection via bluetooth, security systems, lighting systems, whole house audio, media server, and so much more. You can even control everything from a Symbian Series 60 phone. Wow. And its free OSS! Wow wow.