Hi.
There are a few possibilities, try them out.
1. When in the game, in the console, type in /dl BiGGunz91, wait for the number in the bottom right hand corner of your screen to hit zero, try listening again.
2. Try listening in the Torishop to see if the sound plays when you hit the "Play" button. If not, you may have a corrupt .wav file.
3. Attempt a Re-Upload.
4. Contact me via PM and I will assist you personally.
Have a good day