You played it in the movie theaters, Warner Bros. You've played it on a new three-disc Blu-ray and DVD set. Now you're playing "Casablanca" again (and its hit song "As Time Goes By") for free on Facebook, Wednesday night.

The ploy is to promote both the $70 box set  and the inclusion of "Casablanca" in a new "Inside the Script" series of eBooks available at the Apple iBookstore, on Amazon's Kindle and the Barnes & Noble Nook. The series features full shooting scripts plus lots of supplemental materials and also zeros-in on Alfred Hitchcock's "North By Northwest,"  "Ben Hur" and "An American in Paris."

The Wednesday site screening of the Bogart/Bergman gem starts at 7 p.m. (east coast and west coast times.) WB has been testing Facebook as a film rental and purchase platform for about a year.