The Xbox nation can't play games round the clock. ("Wanna bet?" someone's already saying.) For those other times, the new Microsoft Xbox 360 offers the ability to stream, in high-definition video and surround-sound audio, all manner of music, photo and video files, TV, and recorded TV, from a Media Center Edition PC located elsewhere in the house. It's a nice benefit if you're already buying Xbox 360. But Microsoft stopped one decent remote control and a couple features shy of making media streaming a killer side benefit of its second-generation Xbox.