Awesome. It's working. At least partly, but it's what I need.

It doesn't look like it supports Airplay MIRRORING (this Wiki page supports that), so no putting the laptop or ipad screen up on the big screen that way. That's too bad. I do want to do that periodically.

But it does support video and music playing, which is what I tend to do MOST often, using the phone or pad as a sort of super-remote. Although as Ouya matures I might not do that at all.

I did need to use a version of XBMC that's newer than the one on the XBMC Ouya Wiki page. Instead I used a nightly from here. July 20th in my case. It works perfectly, at least for video streaming.