Amazon Video on Demand has been in private beta on the Roku Video Player for about a month now, but now everyone can stream rentals and purchases to their TVs. The free Roku update enabling the service will roll out this week, and once it's installed, you'll be able to browse, rent, and purchase any of Amazon's 40,000 movies and TV shows. The interface is an extension of the familiar Netflix interface, slightly re-jiggered for selecting content directly from the box instead of the web, and payments are authorized with a five-digit PIN so the kids can't go
