Zone two problems with Denon AVR-1910

I am trying to get my zone two to work so I can watch and hear our projection screen from the hot tub. I have followed the directions in the amp assign menu to zone2 (pg 25). I played with the level l/rch on the zone2 settings but since I was getting no sound at all, there wasn't much point. I tried switching the remote to zone two--nothing there. I did read a thread about a zone two problem and a TV. I am using an RCA connector to the projector since it is not high definition. That made some other connectiong interesting but everything works--CD, direct TV, high def bluray SONY DVD, even an old VCR in case somebody brings Cinderella or something.

I am posting my first problem so I don't really know anything except the guy's problem in January got fixed.

Open to input!

So what can I do to get sound out back? How about attaching the speakers to unused front connections? I only have a center and two L and R speakers in front. I could have the outside speakers on B; I would have to be playing the same thing inside but nothing would come through my front speakers. Right?