Open External Library
Flash CS4 Tutorial
How to Open Library from External .fla File
Re-using assets between projects is a real time saver. By opening a library from an external .fla file you can quickly import several objects.
With a new Flash document open, choose File > Import > Open External Library.
Navigate to an existing .fla file and click Open.
With the external library open, you can drag one or multiple objects to the stage or current project library.