Custom Music

[Hypercube]

So for my next mod, I wanted to use custom music for it to give it a little variety. How exactly do I do this though? I mean, make the ogg file play in my mod, because the directory for all of the music files are from the main SOMA folder. So how do I get the music to play in this mod? I'm no genius so I wouldn't know off the top of my head how to do this, but I would like to know so I can add the background music to the custom story.