According to the BBC site on C.S. Lewis
Hear the only surviving footage of C.S. Lewis’s broadcast talks. This is the last episode in Beyond Personality, the third series. It was broadcast on BBC radio on 21st March 1944. We apologise for the sound quality.
The audio clip plays in RealPlayer and is about 14 minutes long.
There’s also a two-minute clip of Lewis introducing his The Great Divorce.
Go check it out.
[H/T: Ponty]
