Here is a belated response to DCA - gasman. This solution won't work, unless I'm misunderstanding. I wanted (like the original poster, I think) to send HDMI out from a computer to a home theater system with a passthrough to my projector. Autocad Mac there. But when I plug in my projector, which has no sound input, the computer stops outputting to HDMI at all in my case, and ouputs through the built-in computer speakers. So switching default audio to the built-in speakers will do exactly the opposite of what I want in this case.

I solved the problem with an HDMI splitter box. I tried two: one from Radio Shack which cost a fortune and a cheap one from an Amazon.com seller. Unfortunately, the cheap one rendered everything in green. The expensive one from RS did the trick, though, so I kept it. In case other people are looking, the model number was 1500474, and it ran $60. Here is a link to a description:.

TOMBOY64 said: ALL YOU GOT TO DO IS: HDMI FROM LAPTOP TO HDMI IN ON YOUR RECEIVER(MINE SAMSUNG HC-7000)THEN HDMI OUT FROM RECEIVER TO HDMI IN TO PROJECTOR. HDMI IN CAN BE ON (SAT IN) OR (AUX IN) AT RECEIVER. TURN RECEIVER ON AND SELECT (SAT OR AUX) THEN SIGNAL IN (OPTICAL,ANALOG, HDMI) IN THIS CASE HDMI. HOPE THIS WORK FOR YOU. Thanks but the reciever is old so doesnt have a hdmi output only red white yellow's, can i use them instead? I am trying to watch MP3 movies on a screen via Inspirion laptop connecting it to my Epson projector to project image on screen via hdmi cable. However, my Bose external speakers plugged into the audio of the laptop don't work and will only work when I pull out the hdmi cables, but then the movies don't project onto the screen any more.