Free online courses from top universities
openculture.com
openculture.com
Most of the good resources I already know of, but I found from this list a slowly-spoken German news podcast for learning German. There are some other nice links in here for other languages that I take an interest in. I'm now listening to the US Foreign Service Institute's Greek pronunciation recordings.
And truth be told, I do prefer my audio samples to be in nonsterile environments, for the simple reason that we'll not be in such an environment when encountering real native speakers.
i.e.: https://www.awin1.com/cread.php?awinmid=6798&awinaffid=42888... redirects to https://www.edx.org/course/probability-and-statistics-in-dat...