forgive me if this has already ben answered, I searched the form, but will it work with it or does it even matter?

It does not matter, because RC v4 does not use synthesized voices.Hope this helps,Pat

Ok, so does it completely replace the original FS9 ATC that EditVoicepack worked with, or does work in conjunction with it. Thanks for the reply, Jeff

It'll replace the FS9ATC with digitized real-life voices.Pat

Oh Ok, now I get it. That sounds awesome. I'm looking forward to hearing the demo. Thanks again for the replies Pat,Jeff