Media is any form of research output that is recorded and played. This is most commonly video, but can be audio or 3D representations.
Screencast of a talk on the flipped classroom at the Boston University Center for Excellence and Innovation in Teaching (CEIT), 13 February 2013. The "talk" was really a guided discussion with colleagues, and this video recording shows the screen of the presentation computer, with the audio in the room. Audio quality is not great (the laptop's built-in mic was used), and questions from the audience especially are difficult to hear (it's better with headphones).
The link below points to a blog post relating the context and plan for the talk.