Step-By-Step Tutorial for fixing looping music/sound

Well I found some threads how to fix sound loops and make the longer than normal:
http://steamcommunity.com/app/218620/discussions/15/43099721383227159/
http://steamcommunity.com/app/218620/discussions/15/540744299835792525/
But I have no idea about them. What shouldI open? How should I edit it?
Can someone please make a step-by-step tutorial?
Replies
Open project.script in something like notepad and paste the contents here.
Open the mod folder and check that song.stream is inside there and that it's not 0kb. After that, open script.script in something like notepad and paste the contents of that here as well.