You have to download through the podcast service, however you should also be able to download directly using the address below:
http://www.thoroughbredracingradione...io/110207c.mp3
You will need to change the last part of the address to reflect the date and segment you want. The link above would get you the 3rd hour on Nov 2. If you wanted the 2nd hour on Nov 1, for example, change the mp3 filename to 110107b.mp3.
Hope that helps.