No. They are different. GTD Live is a recording of David presenting his classic seminar: GTD Managing Workflow, Projects and Priorities to students and faculty of a California university.
GTD Fast, which is no longer available, was an abridged seminar. There will be some overlap, since they are both based on the Getting Things Done book, but GTD Live is the most recent recording and much more current. The GTD Live audio seminar is the next best thing to seeing David Allen in person, and is one of our bestselling products.