3 random movie clips from 1 button? [MX]

Alright, I need help. Here’s a picture to help illustrate my problem:

I want users to be able to click that refresh button, and have 3 more hexagons/cubes (which have yet to be placed) load below it. Inside the hexagons will be images, links, etc. all of which will be clickable. Heres the catch. Those 3 hexagons aren’t going to be the same all the time. I want the refresh button there to load the 3 clickable movies randomly.

So my questions are:
How do I create a database of movie clips for the button to pick from randomly, and how do I make that refresh button load all 3 movie clips simultaneously?

I tried adapting the random image tutorial on this site for my purpose, but I had trouble making it load 3 different movie clips simultaneously, rather than just one.

Thanks.