I was recently recording a narrated Keynote presentation for display on the web and found myself wanting to use the OmniGroup’s very cool OmniDazzle screen effects program in conjunction with Apple’s Keynote presentation package. Unfortunately, by default, Keynote doesn’t play well with other applications, as it intercepts all the keyboard commands. You can, however, convince it to play nicely very easily. Here’s what you need to do.
Open the Keynote preferences. This is in the program menu (or Apple/Cmd ,).
Go to the “Slideshow” tab.
Ensure that “Allow Exposé, Dashboard and others to use screen” is enabled with a checkmark beside it.
That’s it! Now you can use OmniDazzle in your Keynote presentations.