Thanks again for help, I thought I had already install that NAudio.dll and did not drag it in. It's working now. I had instead it in Script for other mods thinking I had already had it in the GTA V Main folder. Working great now.
I'm on LSPDFR .4.4 GTA V 1737 Build This Script causes LSPDFR to crash. I tried many times with it and without. When I delete this script I am able to play for hours with no problems soon as I load this script LSPDFR Crashes. Please Help