Editing Sound Effects In Super Metroid

[MetroidPeter]

I was wondering if anyone knew how to edit the sounds of Super Metroid. I started wondering after I watched Metaquarius' video on X-Fusion regarding the SA-X, which had completely new music and sound effects. Editing stuff like the sounds of bombs exploding (SM Redesign Axeil did this), Samus' grunt upon getting hurt, or even some music. Anyone gonna fill in their 2 cents?

[RealRed]

http://forum.metroidconstruction.com/index.php/topic,3184.msg38965.html#msg38965