How do I create a new instrument using .exs and .wav?

Question

I have a .exs file and samples that I downloaded from
http://www.phunkynutts.com/steeldrum.php
I am trying to get these to work as an instrument. I know that the Rhythm Jam Pack has Caribbean Steel Drums and they sound OK but there's no way to get a roll, which is an important part of steel pan playing. These samples include rolls. I actually have GarageBand 8 but if te solution requires 9 I'll upgrade.
What I did, which didn't work, was
1. Put the .exs file in place
2. Drop the samples in a folder with the same name
3. Edited the carribean steel drums .cst file to reference the above and saved it with the proper name.
The instrument shows up but it plays piano, not the samples. My instrument isn't in the drop-down menu to change it. If I change it to AuAudioFilePlayer and select my samples, the samples play within the instrument "preview" window but not when using the keyboard. What do I need to do to make it work?

Answer 1

Sorry not to be more clear.  It is a name assigned to one of the 
frames by the person who originally designed the website and is shown 
in the list of about 150 action frames that were created in this 
particular fla document.  This "list" comes up in the left hand column 
of the Action-Frame box. When I click on Load Code 380 which is half 
way down the column of frames, the following text comes up on the 
large screen to the right of the column of 130 frames.
IMAGE.gotoAndPlay("start");
loadVariables("data/series01/15title.txt", "_root.IMAGE.TITLE");
loadVariables("data/series01/15price.txt", "_root.IMAGE.PRICE");
loadMovie("data/series01/about.swf", "_root.IMAGE.ABOUT");
IMAGE.mc_pic.attachMovie("pic","pic",1,)
IMAGE.mc_picTHUMB.attachMovie("pic","pic",1,)
This text is what I am trying to transfer to copy then paste into a 
new frame after which time I want to slightly edit the text.  I am not 
a programer so I apologize if I am not using all of the correct 
terminology.
Thank you again,  Jon