A preloader for a soundfile

This is a very simple task I have two flashfiles that needs a preloader. If you get the fla files, can you create a simple preloader in the two files. I have tryed a couple of times, but I cant get the XXXX to work. So if you are the right guy, you will probably be able to do it in less than an hour. I will have small tasks like this one in the future.