Podcast1 "Mediating Speech" is about the amplification of one's voice through another person. It includes series of episodes of the online audio archive of the player, overlayered and commented by my voice as a narrator.
Protesters in occupy wall street all together repeated the voice of the public speaker in order to amplify their voices. This is called "the human microphone"
parts of the podcasts that you find interesting by repeating or annotate them with your vocal messages. You can listen to the podcasts with headphones and record with any microphone.