Some audio links of Voegelin’s recordings are below.
Autobiographical Reflections: Ellis Sandoz’s 1973 interview with Eric Voegelin in Palo Alto, California. The interview was published as Autobiographical Reflections (Collected Works of Eric Voegelin 34).
The University and Society: Eric Voegelin’s lecture at Stanford University in 1970, recorded by Brendan Purcell.
The Man in the Cosmos: Eric Voegelin’s lecture at Emory University in 1967, recorded by Brendan Purcell.
Eric Voegelin on Ideologies’ Destruction of Language: a video depiction of Eric Voegelin’s audio recording that is also available at VoegelinView.