I think I may have posted something like this on the old Oshkosh365 forum, but since I happened to be listening to some of the shows while shuffling paperwork today, I thought I would post it again.
The Internet Archive, www.archive.org, has a number of original old time radio shows available for free downloading or streaming. Here's a list of some of the aviation programs available:
Captain Midnight: http://archive.org/details/otr_captainmidnight
Hop Harrigan: http://archive.org/details/otr_hopharrigan
Sky King: http://archive.org/details/SkyKing
Air Adventures of Jimmy Allen: http://archive.org/details/AirAdventuresOfJimmyAllen
Ann of the Airlanes: http://archive.org/details/Ann_Of_The_Airlanes
The Dambusters: http://archive.org/details/TheDambus...ustralianRadio
Tailspin Tommy: http://archive.org/details/TailspinTommy
Speed Gibson of the International Secret Police: http://archive.org/details/Speed_Gib..._Secret_Police
I'm sure with some searching you can turn up more. I also really enjoy the X Minus 1 science fiction stories.
Have fun!
Zack