Video killed the MP3 download?

I missed Obama’s press conference on Wednesday and wanted to listen to it on my long commute home yesterday. To my surprise, it was easy to find full video and typically a full-text transcript of the conference from sites like The Huffington Post and as well as YouTube and directly from the White House Blog, but no audio-only sources. Eventually I had to use Farkie, a free online video-converter to download the Youtube video and convert it to MP3.

Am I missing some obvious source source, or has video made such headway now that nobody even bothers making audio-only versions available anymore?