John Bocharov has a tutorial up showing how to use the content with the new Smooth Streaming Beta for IIS7. Among other things, it shows the nice WebDAV integration between Expression Encoder 2 SP1 and IIS (using the IIS WebDAV Extension). Ala:
Better yet, it includes the new bandwidth simulating User Experience Simulator that shows the current bitrate, and lets you specify a particular bandwidth to simulate. The simulator is an Expression Encoder 2 SP1 template, and so can easily be used with other content.