The easist way to do this is to take a copy of the Sound folder of the aircraft you wish to use the sound from. Then open the main folder of whichever aircraft you wish to use it & paste the folder into it. Overwrite files/folders when prompted. You can take a backup copy of the original Sound folder first if you wish.

Alternatively you could alias the Sound.cfg to whichever aircraft you wish providing it's installed to the same directory & has its own sound files. This is useful if you wish to conserve drive space. My Aliasing article explains it. http://www.simviation.com/lair/aliasing1.htm

dad39 wrote on Oct 16^th, 2007 at 8:36am:

I'm pretty sure I understand what you want to do. All flyable aircraft will have a sound folder which is usually named Sound. This contains a file named Sound.cfg. Unless the Sound.cfg is aliased to use the sound from another aircraft the Sound folder will also contain a number of WAV files. These should be regarded as a sound set & kept together. The FSX default aircraft also have a folder named sound.ai which I assume is used when the aircraft is used as AI traffic. This shouldn't affect the sound of the flyable version of the aircraft.

Transferring the sound from one aircraft to another is usually a simple matter of copying the complete Sound folder & pasting it into any aircraft you wish to use it, replacing the original Sound folder. In some cases this might not be named Sound so you must make sure that the new folder name is exactly the same as the original folder used in that specific aircraft. For example; some aircraft might have sound folders named Sound.GE or Sound.RR depending on the engine used on different variations. The folder used by each variation will be defined in Aircraft.cfg.  

This should work just the same in FSX as with all other versions of FS/CFS. Which sound files did you wish to use in which aircraft? I should explain that I only have the FSX Demo so if this involves default aircraft I might not be able to check it out for you.

Hi Dad39,

After you transfer the sound to a plane, you have to reboot the plane to have sound. Just choose and boot up a nearby plane in the thumbnails, then choose and boot up the plane with the new sound file and you will have the sound. I have done many transferrs this way and it works every time as long as the transferred file is from a viable source.

Try it, you'll like it !       DB