OK, I figured it out....so here is how it's done (Thanks to Keith on Bit-101 for this info).
Code:
package {
import flash.display.Sprite;
public class App extends Sprite {
[Embed(source="myLibrary.swf", symbol="SomeLinkageID")]
private var SomeLinkageID:Class;
public function App() {
var mySpriteInstance:Sprite = new SomeLinkageID();
addChild(mySpriteInstance);
}
}
}
How it works: build an swf file of symbols you want as library items in Flash. I have called it "library.swf" but you can replace that with your own name.
Set each symbol's export settings to embed on first frame and export for Actionscript.
Write down the symbols' Linkage ID names and use these to replace "SomeLinkageID" in the above example.