It recently came to my attention that UC Berkeley offers many courses for free in audio format. Although the different courses use different file types, and access options, the service is quite good. I was able to download an entire Calculus course in m4a audio format. It was really impressive. Some classes don’t let you download the audio, and require you to stream the information. And others share the information and also include powerpoint presentations. So this is a seriously good resource for anyone who is interested in subjects from Math, to Art History and beyond. Some classes go as far back as 2003 and earlier. The cool thing is that the courses are separated by lecture, so it is easy to organize the information. The service is free and it looks like Berkeley is asking for donations in order to keep their archives alive.
CLICK HERE to browse the course catalog of available webcasts from UC Berkeley.
-Tyler