I want to send the same signal from my cable box to two different TVs, my main one and my bedroom tv. I have the main one hooked up with the component video outputs and the stereo sound. I'm using the the regular video out from the cable box to the bedroom tv. I need to some how get the same sound from the RCA audio outs to the bedroom tv. Any suggestions? Thanks.

Can you run cables? If you can you could just buy two Y cable splitters from Radio Shack, to split the L and R audio. Use one for the left audio out and one for the right. This one is video (it would work, but there are cheaper models)
http://rsk.imageg.net/graphics/product_images/pRS1C-2996900w345.jpg

If cables are not possible you could go wireless with something like this four channel A/V sender and receiver from http://www.brickhousesecurity.com/gx3000.html

thanks! I found some similar to this but super cheap at monoprice.

using y cables may make the sound much lower in volume, if that doesn't work out you can get pretty cheap splitter/switch boxes from radioshack etc.