All the code does is just freeze the game at the strap menu when Gecko loads and I did use Brawlbox for it.

What am I supposed to use to put codes in? I used Ocarina and it gave me an error screen with a bunch of random codes when Gecko loaded. 

Nope

I have tried SFX hacking with Sawndz and Super Sawndz and both don't work. I am using the Super Smash Bros Silver pack and I am trying to put the announcer voice and SFX for Megaman over Ness, Lloyd Ivring over Wolf, and Megaman X over ROB. I use Gecko OS 1.9.3.1 to load these hacks. What I am doing is putting the voice for the character using Super Sawndz (which is easier for me to use), save it, and put the smashbros_sound.brsar in the sound folder of my SD card. Am I doing anything wrong?