Hi Tony, When I have replaced sounds of airplanes in FS X, I found them in the folder called "sim objects". You will find a folder in that section called airplanes. Go to the plane you want to deal with, and you just copy the new sounds into that folder. for anyone using FS 9, go to the folder called aircraft, located in the route folder of FS 9. then go to the aircraft you want to deal with and copy the new sounds into it. I always take my old sounds and copy them into my music folder in My Documents. I know this was lengthy, but I hope this was helpful. Good luck. Best regards, Adam Shaible ----- Original Message ----- From: Tony To: bvipilots@xxxxxxxxxxxxx Sent: Tuesday, March 20, 2012 1:49 PM Subject: [bvipilots] Sound Pack for Beach King Air Hi Guys I decided to obtain this sound pack. The installation instruction state: STEP 1. Locate the folder containing the aircraft you wish to replace the sounds of Step 2. Within there delete the "Sound" folder - after creating a backup (we suggest renaming the folder to SOUNDBAK) and simply replace with the Sound folder found in this package. Where in the FSX folder structure should I look please, as I've noticed only one sound folder, i.e. not specific to an aircraft. T