This isn't minor-league specific, or even Red Sox specific, but I think it absolutely merits a link. Fernando Perez and Gabe Kapler, who are easily among the smartest and most articulate players in the game, sat down with Baseball Prospectus and talked for 20 minutes, completely unfiltered and unscripted, touching on subjects most athletes don't go near. This is, IMO, one of the most interesting baseball podcasts you'll ever hear.

http://www.baseballprospectus.com/radio/