Ok so basically as said earlier you need custom ost if you want there to be multiple songs for example one song during stealth and another during loud but once you have that installed and correctly placed downloas the .zip up above and inside i have left everythig inculding the .txt folder if you want to customize it basically throw the foldern amed Overdrive which is in the .zip into custom OST tracks and it should work if not then comment and il respond whenever i have time