These are audio lectures first given at my old Church in Palo Alto.
Upon request, I have converted these files to low-qual (both media and content—smile) MP3s, for download (as requested).
In rough chronological order:
Apologetics Update (circa 1997) : Syllabus and Lectures
Bus Tour of the Universe: Syllabus and Lectures
The Great Intersection—the Incarnation: Syllabus and Lectures
The Great Irruption—the Cross: Syllabi and Lectures
“Lessons I have Learned”: Lectures (no real Syllabus)