After all the planning, the figuring out, the assembling and handing it off to a great installer, it works.
This is in the same room as my Sapelle' wall of cabinets
The plan was simple, a bar room full of recessed panels. One of them will contain a hidden audio entertainment center. You push a button and it slides out of the wall, push the button again and it goes back in, out of sight, like it never existed. And it worked !!
Here is the crappy quality phone video. Wish it was better, but it isn't.
http://fototime.com/02B8D0396F56AD3/orig.avi
Here is the static picture of the area.