Wendy offered a presentation on Metta this morning, which included portions of these recorded dharma talks:
John Teasdale
The Significance of Kindness and Care
http://www.dharmaseed.org/teacher/238/talk/12371/
Adrianne Ross
Guided Loving Kindness Meditation
http://dharmaseed.org/talks/audio_player/3/8168.html
Burlington Buddhist Sangha 