What you are going to run into is HDCP which may prevent you from using the digital sources to output an analog video signal. Since the Marantz only has one HDMI output you may have to choose where to watch the Bolt. Another possibility is to get an HDMI splitter which could allow you to output the Marantz signal to either the TV or the Projector. Then you could feed your Blu-ray and the Tivo to the marantz. Do some good research on the HDMI splitters as I would expect there are some snake oil products out there.