Greg Scholl question

Hi Greg,
I've become pretty involved playing with MSTS train sim, in spite of its shortcomings. There are some great logging engines by Jon Davis, but the available sound files are awful! Since you did the Rayonier video, which is a real favorite of mine, how would I get permission to use some of the original sounds. We're talking a few seconds of chugs, bells and whistles. Nothing very identifialble, and not for sale, but available to the train sim community as the properly labeled sounds. There's a fair chance to see accurate models of many of Rayonier's engines, a shame to use the default sounds!
Steve