If I watch a college lecture, 12 full cles, online, can I get any credit?

Yale has an online cl thing where they post free full lectures for a from an entire semester, so like, 15 credit hours, worth of video. They also post the syllabus, midterm, and final. If I watch it and do the midterm/final, is there anything I can do to make that count for credit? Or is it basically a free time personal knowledge thing.