I found a similar topic, but the person figured out what his problem was before any suggestions were posted. My headset won't work when I am running the LDS/FS2Crew. It works OK when I'm using ifly/FS2Crew.

I'm running Windows 7 64bit, Having this issue with FS9.

The iFly and 767 use the same system, so the results should be the same.

 

So you mean when you speak you see nothing in the green bar?

 

Try re-installing FS2Crew 767.

 

Cheers,