ActionScript 3.0 :: Externally Loading MP3 Player (XML Driven)

I have a project that first loads a preloader swf then loads a main swf. Next, other swfs load externally into the main swf. One external swf is an xml driven mp3 player. The player runs fine when opened on it's own, however, when it is loaded into the main swf, the playlist isn't actually showing up, nor is the audio playing. The components, combobox, show up but playlist is not populated nor do the controls work. Below is my source code. Note: the playlist, mp3 files, and external swfs are all in the same directory.

Code for preloader swf
Select allvar l:Loader = new Loader();
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("test_flash_16.swf"));
function loop(e:ProgressEvent):void {
[Code] .....