Managing media with the library
Managing media assets with the Flash document library
The library in a Flash document stores media assets that you create in the Flash authoring environment or import to use in the document. You can create vector artwork or text directly in Flash; import vector artwork, bitmaps, video, and sound; and create symbols. A symbol is a graphic, a button, a movie clip, or text that you create once and can reuse multiple times. You can also use ActionScript to add media content to a document dynamically.
The library also contains any components that you have added to your document. Components appear in the library as compiled clips.
You can open the library of any Flash document while you are working in Flash, to make the library items from that file available for the current document.
You can create permanent libraries in your Flash application that are available whenever you start Flash. Flash also includes several sample libraries containing buttons, graphics, movie clips, and sounds.
You can export library assets as a SWF file to a URL to create a runtime-shared library. This lets you link to the library assets from Flash documents that import symbols using runtime sharing.