ActionScript 2.0 :: One Main Preloader For Multiple External SWF

I need to preload 2 external .swfs, one containing animation and one containing sound, and I need them to start playing at the same time. As of now I have a general preloader on the main timeline, but as you might expect, after the preloader finishes, there is a lag while the .swf's are being loaded. I thought everything was solved, until a friend of mine looked at it in dial-up, and the preloader just kept looping 10 times before the animation started, so now I'm starting over. Part of my complication I believe is that I'm using loadMovieNum into levels as opposed to loading the external .swf's in a separate container MC (that's what I've noticed most people recommend for this problem), but I tried doing that technique several times with no luck. Right now my main movie, index.fla, has a preloader MC in the first frame, with this AS attached to the clip:

Code:
onClipEvent (enterFrame) {
loading = _parent.getBytesLoaded();
total = _parent.getBytesTotal();
percent -= (percent-((loading/total)*100))*.25;
per = int(percent);
[Code] .....

The clip contains a loadbar, static text (which just says 'Loading'), dynamic text (which tells the percentage), and a 'stop' in the actions layer. In the actions layer within my main movie, there is a 'stop' on the first frame as well. On the second frame, there is this AS:
Code:
var audioOn = false;
loadMovieNum("musicfile.swf", 1);
loadMovieNum("1movie.swf", 2);
stop();

In order that the animation and music starts at the same time, within my animation .swf (1movie.swf), I have this AS on the first frame of the actions layer:
Code:
if (_level0.audioOn == true) {
gotoAndPlay(2);
}

Within my musicfile.swf, there is this AS on the second frame of the mp3:
Code:
_level0.audioOn = true;
My main objective is to be able to use my preloader to preload both of these .swf's concurrently in my main movie so that they may start at the same time.