Sony today pushed ahead with its home theater PC strategy by introducing the DT1 digital TV tuner (shown below). Although meant to stack with the TP1 media PC, the DT1 is a self-contained hub that can operate with or without a computer to play both analog and digital broadcast TV. When linked to a Windows Media Center PC, it can also record video in HDTV and standard resolutions, including a 1440x1080 signal for those instances when HD programming is only available in a 4:3 ratio. Computers can also watch live TV from the DT1 whenever the latter is connected to the network through Ethernet. Sony is shipping the DT1 to Japan within the next few days at a price of $415.