If your an Orson Welles fanboy you love this website which has mp3 files of the Mercury Theatre radio shows, a great way to fill up your iPod the fanboy way:
The Mercury Theatre on the Air
"The finest radio drama of the 1930’s was The Mercury Theatre on the Air, a show featuring the acclaimed New York drama company founded by Orson Welles and John Houseman. In its brief run, it featured an impressive array of talents, including Agnes Moorehead, Bernard Herrmann, and George Coulouris. The show is famous for its notorious War of the Worlds broadcast, but the other shows in the series are relatively unknown. This site has many of the surviving shows, and will eventually have all of them. The show first broadcast on CBS and CBC in July 1938."