Yesterday I highlighted the new iPhone MediaBrowser app and the developer of the frontend (shitburg) wanted to me to let you know that there is a beta out http://code.google.com/p/mediabrowser-rc/ and that the app is called mediabrowser-rc.
The backend service is mediabrowser-ws http://mediabrowserws.codeplex.com/ and was developed by evorgevol, it looks like between them they have come up with a great service. They have also a new a new video showing off the latest features: