If you're interested in running a more profitable construction-related business and want information you can listen to "on the go", Michael Stone's audio version of the Markup & Profit classes is available in MP3 format for download.
Each recording is about 30 minutes long - you can listen to the first recording here. (28:08 minutes long, if you prefer you can download the recording)
The podcasts are a companion to the book, "Markup & Profit; A Contractor's Guide Revisited". Michael frequently directs the listener to specific pages in the book, if you don't already own the book you will want to purchase it. These podcasts are the same recording as the audio version of the Markup & Profit class, broken into smaller chunks and now available as a download in MP3 format. You can purchase podcasts individually or together.