If you have 2 HDTV displays, and want to simulataneously show tha video program on both you will need to use a hdmi splitter or HDMI distribution amp. The HDMI splitter can process the HDCP key exchanges between the source and both displays and keep each session independent. This HDMI distribution has a separate Digital Toslink Audio output that extracts the audio from the HDMI input so you can easily connect it to a non-hdmi surround sound system.
