Ask for MP3 files of all Obama's speeches. .

http://www.whitehouse.gov/briefing-room/weekly-address

This is Obama's weekly speech, which can be downloaded, including mp3, mp4 and text.

Take a look, there are various speeches about other activities on other pages, http://www.whitehouse.gov/photos-and-video/video/2013/05/06/press-briefing.