??? ??? ??? ???

I've been using some FS9 airraft in FSX somewhat successfully by following the tutorial submitted, that is, by creating and inserting "FS9aircraft" folder in the main FSX folder and adding the line "SimObjectPaths.6=FS9aircraft" in the appropriate section of the FSX.cfg. But now I may have to review my procedure. I've been adding the FS9 aircraft folder in the SimObject\airplane vs. pasting it to the "FS9aircraft" folder. It worked for me. Is this the correct procedure?

Further I've been seeing the word AI, such as aircraftAI, soundai - what are these? For example, some FSX aircraft have "sound" and "soundai". I appreciate any clarification on this matter before I screw things up.

Bubblehead