Audio learning resources

For audio learning resources, check LearnOutLoud. The site compares with Audible for selections, but has a distinct learning focus. I listened to some free technical podcasts (Digg; Creative Commons), which turned out to be Wikipedia definition entries read out loud. It was okay, but I’d like to see the estimated run time of each, so I can decide whether to listen at my desk or download the file to my mp3 player.