I was looking online for poems by Robert Frost and found this free podcast from the Poetry Foundation. The podcasts feature different “essential American poet” each week. I listened to the show on Robert Frost. There was a brief bio of Frost’s life then the poet himself reading six of his poems. The audio lasted about 10 minutes.
http://www.poetryfoundation.org/journal/audioitem.html?id=2092
PS. There were also some neat tools under the Children’s Poetry section.