AoTTG - Modding with Visual Basics + .NetReflector SFX Mod

IM A SUPER NOOB! The game is Attack on titan tribute game. The Creator doesn't mind mods as long as they do not disturb gameplay or is abusive. the class in which I believe I should put the mod is in the game manager (FengGameMangerMKII). I'm looking for the code to make this. So as masterclient/host of a server I can take a Soundtrack (.wav) and I can play thatby typing, for example: /Play Soundtrack1. Thanks, heres the modifiable file.

http://www.mediafire.com/download/plqfvfpa6admitm/AoTTG+01042015.rar Extract it to view Data files.