If you want to create multiuser movies or applications with Director, you must use Flash Media Server in your Director movie. This can be a Flash movie that has already been authored to communicate with the Flash Media Server or a simple Flash movie that can serve as a container for Flash script objects that you create with Lingo or JavaScript syntax. You can create applications that use the Flash Media Server entirely in Director by using Lingo or JavaScript to create Flash script objects.
For more information about using Flash Communication Server in Director, see Using Flash, Flash Components, and Other Interactive Media Types.