Choosing the right horn sound

Hi guys, I just got a MRC Sound Only Decoder 0001662 it comes with 16 different horn sounds. does any one know what horn is for what engine, I need to find one for the CN C630M.

http://www.modelrectifier.com/search/product-view.asp?ID=8094

CN typically used 3 chime Nathan horns. Your best bet is to find an internet recording of a CN horn and see what horn on the chip comes the closest.

David B