I made myself a custom soundtrack using the THUG Pro Soundtrack Generator and found that it didn't work, so I took a look at a .json file from the tutorial on the main site and formatted the .json file made by the Generator to look the same way and it still doesn't work. I've been at this for a couple days and it's starting to frustrate me, so I decided to hit the forums to see if anyone could take a look and see what's wrong. If you want the music files, I'll be happy to PM you with a link to them.