Loading external swfs and preloading them

well kinda as the subject line says. I am trying to make a jukebox that just loads an external swf from a on (release) {loadMovieblahblahblah}. Anywayz, i want to like be able to preload it first before it starts playing, but i don’t want it to preload just as the jukebox pops out, i want the songs to be preloaded as the user clicks on the buttons. ya ya? i know it can be done, but i can’t think how its done. any help?