Episode 0174 - Gautama Buddha on Karma, part 1
(Click on the title, or here, for audio.)

Essential Theravadan Pali teachings on karma:

10 unwholesome (akusala) actions, specific body/mind/social karmic consequences of right/wrong action & speech; etymology of "sin" (Gk. hamartia) in the New Testament

10 Akusala Actions: http://www.dhammawiki.com/index.php?title=10_unwholesome_actions