BBC Radio 4 is currently airing From Calvary to Lambeth on their Religion and Ethics program.
According to the web site:
Michael Buerk reports on the divide over homosexuality in the worldwide Anglican Church. He talks to Archbishop Desmond Tutu, who gives vent to his feelings of shame over homophobia.
To listen click here and then on Listen Live.
Read more on Desmond Tutu by Howard Anderson at Daily Episcopalian.
UPDATE: if you missed it click here for an archived version.