There is an A/V page on the main site, but I haven't the foggiest idea how to updated it.
http://www.bonnevilleamerica.com/audio_video.phpYou need to find someplace to stash it online that is accessible to the public. I wonder if any of the image hosting service like Photobucket or Picasa allow sound files. Of course if you have a web site of your own you can upload it there.
Anyway, then link to it as you would any other web page (not like an image).
Edit: You could upload it to YouTube maybe...