hay buudy try using ADOBE AUDITION 1.5 that will help you. as that is very good for doing that sort of thing, that is what i used when i did some new sound they have a new 3.0 out
http://www.adobe.com/products/audition/
p.s try setting it on 1600mhz not 4500mhz as sh3 dose not like 4500mhz