Given how readily available the Orson Welles classic has been, I kind of wish the deluxe DVD of the George Pal film would have used the Lux Radio Theater adaptation of the movie for their bonus feature. The February 8, 1955 broadcast with Dana Andrews, Pat Crowley and Les Tremayne is available for listening on YouTube:
Part 1
http://www.youtube.com/watch?v=Gk52G-KWGAs
Part 2
http://www.youtube.com/watch?v=tbQMmvYUd64&feature=relmfu
Part 3
http://www.youtube.com/watch?v=VNoEZgAQbr8&feature=relmfu
Part 4
http://www.youtube.com/watch?v=wQSBxq5USVo&feature=relmfu
Part 1
http://www.youtube.com/watch?v=Gk52G-KWGAs
Part 2
http://www.youtube.com/watch?v=tbQMmvYUd64&feature=relmfu
Part 3
http://www.youtube.com/watch?v=VNoEZgAQbr8&feature=relmfu
Part 4
http://www.youtube.com/watch?v=wQSBxq5USVo&feature=relmfu
