Today I received an email from the Joost Team to join the beta. They have created an OSX client but it has to be operated on an Intel based Mac.

Joost promises a combination of the TV experience and social networking. For example, live chat is available while you watch the content. It apparently uses a peer to peer scheme to stream content directly over a broadband connection using H.264.MPEG-4 AVC.

Installing the application was a snap. It was a quick download. It unzipped quickly. I pulled it into the Applications folder. Clicked twice on it and it launched immediately.