Audio digest is good. It is run by the Cali Soc of Anesth. Basically it is audio recordings of lectures from meetings around the country. Some very prominent speakers on very interesting topics. The Dannemiller foundation out of San Antonio has review courses which are very good as well. They sell audio CDs of the course which are good as well. Neils Jensen has a set of CDs that correspond to his Big Blue book. If they were ONLY anesthesia reviews without all of the garbage attempts at inspiration/motivation, they would be VERY good. You have to sift through a bunch of crap to get the good stuff though. These are the things I have found helpful and recommend to my residents.
The CDs are very good if you have a long commute.