Also, are these demos supposed to have positional tracking? They only have head tracking for me. Is it an issue on my end or is positional tracking not implemented yet?
I'm not sure about the demos you mentioned but the test room in the Oculus Configuration Utility definitely supports positional tracking. The camera should have a blue light when the test room is being displayed.
Perhaps you haven't powered your camera? It doesn't draw full power from USB, unfortunately.