i need the sound of a paticular diesol train engine?

Question

it's a class 37/40, is there a free site to obtain this?

Answer 1

Maybe through theses sites, you could find what you need:

http://members.tripod.com/~NASCARULZ/upmidwavs.html

http://www.irfca.org/users/jayb/

http://www.railring.com/

Answer 2

Here is a web site that focuses on the downloads of Microsoft train simulator add-ons. They have a huge collection of train sounds, and they're already in .wav format.

Answer 3

I don't know about a free site, but most truckstops have train horns. Try them..