Actually, MonoPrice will be releasing a Mini DisplayPort to HDMI adapter (supporting HDCP) by the end of January according to this link: http://www.macyourself.com/2008/12/11/macbook-owners-rejoice-mini-displayport-to-hdmi-adapter-soon/
The only problem with that is that audio will still need to be passed separately with its own cable to whatever speaker solution you'd like.
The only problem with that is that audio will still need to be passed separately with its own cable to whatever speaker solution you'd like.