The crew at UDS have put the audio recordings from the sessions on-line.

http://uds.ubuntu.com/audio/uds-m has the audio files in Ogg Vorbis format for download. There are separate sub-directories for each day from Monday through Friday, and the files are timestamped and named based on the rooms that sessions happened in.

To see the list of rooms and find out what time a session ran, go to http://summit.ubuntu.com/uds-m/.

This compliments the video which is available at http://videos.ubuntu.com/uds/maverick/.