Laminar Research released X-Plane 7.21 today.
New things since 7.20: (This is not my writing)
Go to the set weather screen and go to the SPACE tab...
now turn on the AURORA BOREALIS... head north and I think you will like what you see!
NEW SOUND DIRECTORIES!
YOU MUST USE THIS DIRECTORY STRUCTURE ON CUSTOM PLANES TO GET THEIR CUSTOM SOUNDS TO BE USED.
THIS IS TO BETTER CLEAN UP AND ORGANIZE THE SOUNDS.
See the Kingair, Boeing 747, and Bombardier CL-415 for some examples.
some new improved engine sounds... LOOK IN THE KINGAIR FOLDER, AND INSIED OF THAT THE SOUNDS FOLDER.
this is how you can customize your engine and prop sounds for each engine on the plane.
New engine option: ducted fans... for lift fans, low-end thrust, and fenestron tail rotors.
Set this in Plane-Maker Engine screen, tab 2, by specifying if any given prop is ducted.