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.
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
Large Advent Loudspeakers/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590
Home Theater System
Onkyo PR-SC886/7125/Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioners