Hi Mark: I've looked aand searched for the MSVCR71.dll everywhere in my windows10(x64) Installation,, but can't find it. have found though information about it in The internet that Windows10 and MSVCR71.dll are not good friend and  the later has a tendency to dissapear from windows sys. folder. Don't undertand why when i had FSX installed, default I installed 727 and it worked fine, then three days later it strikes. I did some manual changes to the 727 installation to see if  recovered the sound, must test and will report...Thanks again for your feedback.

JUST DID A SHORT FLIGHT TO TEST V-1 AND ALT. SOUNDS. :-/ AFRAID THEY'RE SILENT. :'( Looking again I do not have the CAB File CALLOUT_SMALLJETS In my Gauges Folder ? I do have it on my win7(x32) Installation. Await advice?...