Hi Frangolllo.

That is really strange. I have used the same method for stopping those sounds in Win XP Pro and Win 7 Pro 64bit. It has always worked fine in both of them for me.

Are you making the changes to the sound.ini file using Administrative rights? It could depend on where FSX is installed. If it is in the default location (C:\Program Files (x86)\Microsoft Games etc...) then it could be being blocked by Win 7 security. My FSX is on a separate 500GB hard drive and I don't have the security issues with it.

Mark