Well, for the heck of it I popped open my open beta version, let it do the updates etc , jumped in stang.... screams away...whistle where expected and sounded perfect... Go to stable version, nope.... So I tried copying a bunch of files over mustang related, lua, liveries etc etc... no luck at all... Im sure there is a file or something that needs copied unless im just stuck with this one as sound files are locked up.