If you have a license you can download it herehttp://www.reikan.co.uk/focalweb/index.php/2012/09/first-focal-for-mac-beta-release/
It is only usable on mac os lion not mountain lion.
You also need another software before installing.http://www.go-mono.com/mono-downloads/download.html
You click on the latest stable version portion and mac osx icon then below click on the download by clicking the word "Runtime". The other downloads don't do anything to help
If you try downloading focal and starting it it will just tell you to get this. Took me a little trial and error, so i thought i'd save you some time. You will need your license with that long code that starts and ends with ##. You also should enter your camera serial number, you don't need all the sn#'s you registered, one will do.