I found thye problem and fixed, My cockpit sounds problem solved. :D :D :D

PLease be carefull  where you download  "msvcr71.dll file.It6 can be a BAD file, but you will not realize. Therefore I become suspicion, after all fix Cs Support  items   exhausted.
I downloaded  free from "DLL-files.com" to desktop unzipped and copy/pases to C:\windows\SysWOW64 (if you have w7 64) or
C:\windows\Sysem32
It did work me , I hope it will work for you also.
Sanal