NPR’s “On the Media” has got to be my favorite of the many excellent radio programs on that radio network; it’s by far the most enlightening and entertaining weekly exercise in parsing the complex motives behind media reporting available anywhere. While cooped up in the office lately, I’ve been glad to be able to access the past month of its archives on the Web site, and gladder still to see that they’ve begun offering these shows in MP3 format, and no longer solely in RealAudio. In fact, I’ve always felt that all public radio programming should be available in the open MP3 standard, rather than in proprietary formats like RealAudio or Windows Media; there’s a nice symmetry there. I hope that Marketplace follows suit.