All of the 737ngx sounds are not working within FSX.  I can hear the basic sounds, i.e. engines, landing gear, etc but all the other sounds are not working.

 

I would love to be able to hear the FO Callouts, the Switches and levers, the CAWS, autopilot disengage, etc. I checked the Sound settings in the FMC and it shows no sound device.

 

How do I fix this ?  Any help would be great!

 

Thanks in Advance!

same problem here :(