Here are two more podcast links for private investigators. There are approx. 100+ podcasts available.

http://www.curbsideinvestigator.com/
This blog has almost 100 podcasts are available for private investigators to listen to, check out the archives section to the right of the blog.

http://www.completelegalinv.com/radio_investigator/
this link has almost 30 shows that are available for private investigators.