You may need to use the HDMI cable and a video capture device. You might be able to use the optional STV-250N Stero Video Cable and connect it to a video capture device but I don't think the quality will be near as good as using the HDMI cable. However using the optional cable and a compatible capture device would be less expensive than the HDMI option.
Analog capture devices (not an all inclusive list):
Elgato Systems USB Analog Video Capture Device
Diamond VC500 One Touch USB Video & Audio Capture for Windows
Hauppauge USB-Live2 Analog Video Digitizer
Tera Grand EasyCAP Composite / S-Video and Audio USB Capture Device
HD Video capture devices (not a comprehensive list):
Hauppauge Colossus Video Recorder
Blackmagic Design...