Over the years I have always picked the occasional issue from the Buddhist podcast Zencast. While these contain meditations and Dharma teachings they are also sufficiently accessible for the non-Buddhist with either a spiritual or a psychological and philosophical interest. My favorite speaker has mostly been Gil Fronsdal, but recently I discovered, and much enjoyed, Jack Kornfield. (feed)
Check out the last two talks, #265 on the joys of the awakened heart and #275 on Redemption. Kornfield has a very pleasant voice, good sense of humor and combines a nice sense of self-deprecation with fine story-telling in his lectures which are very insightful. The joy lies in the listening, the free picking and choosing from what is discussed and undergoing the talk as a meditation in itself.
Engaging in the path,
Gil Fronsdal on speech,