How do I use loadMovie without using a button to trigger it?

I have music for my site that I want to load from an external file. The external file has a play and stop button in it (which work perfect). I can get the music to load if I make a button that triggers the loadMovie to happen, but can’t figure out how to get it to loadMovie using a frame. Basically I just want the main site to load and I want the external music file to load automatically w/o pushing a button or anything. Here’s the code I was trying, but the music controller and music never load into the main movie:

	loadMovie("mcMusic.swf", "music_container_mc");

I tried that code on the music_container_mc movieclip but it does nothing. I’m sure its something simple, I just can’t figure it out.