His app is at http://jonudell.net/av/audio.html. I then needed to find a URL to a MP3 file, which took a little bit of searching, since a lot of podcast play pages are not a direct link. Finally, I settled on an extended cut episode of Side Hustle School. I hovered over the “Listen Here” link for episode 12 and saw that it was a link to a MP3 file. I copied the link address and pasted it into the url text box in the Jon Udell app. Next, I entered a start time and stop time for the clip (from 1:00 to 2:00) in the selection boxes on the app page, then clicked the button “Play clip”. The app then started at 1 minute in and played for 1 minute – excellent! Finally, I clicked on the link at the bottom where it says “link to av editor with these settings” to get a URL for my clip. Now you can listen to it as well!