Garry's Mod

Garry's Mod

Zombie Survival
Addon modding help
So basically I want to start small and try to mod my custom music (ripped from another game) into this addon. I have all the sources and stuff but for whatever reason I cannot just replace the file or override everything by throwing "zombiesurvival-master" into the addons directory - this will just break everything (or I'm too dumb which is more likely ngl).

I modified "sh_options.lua" and "shared.lua" to include my custom music file and to acknowledge it's length. Is there anything I should or shouldn't do?