Audio Problem

I just loaded RCV3, I tried full and minimum install. The only audio I seem to get is the ATIS info and nothing else. When I hit the 2 key to select CD for example, it basically does nothing. Sometimes I can get it to go to ground etc, but still no audio or any text with instructions. I still have RCV2.2 installed, could this be a problem? Any ideas would be greatly appreciated. Thanks.