Hacking How to patch smash bros with mods??

[machampdude]

I couldn't use this method: http://pastebin.com/W6WCs2Tj
I'm assuming because of my below average wifi, but using loadiine.ovh worked.
I'm on the Homebrew Launcher and I want to launch something that can patch Smash 4's files to allow me to have custom music. IDK what thing I need to launch modded games...