The Hardy Boys Old Time Radio Broadcasts on DVD has turned up on Amazon.com with the following description:This unique old time radio DVD collectible features 8 digitized reels of classic The Hardy Boys radio broadcasts and over 6 Hours 59 Minutes of total running time on 1 DVD. Take a journey back through radio broadcasting history with this large audio library of OTR memorabilia. The golden age of old time radio has been rescued, digitized, and packaged into a gift set that any classic radio lover can appreciate. The DVD opens and plays in a computer DVD drive and the collector can listen to the audio on a MP3 player, DVD/MP3-compatible car stereo, computer, MP3-compatible DVD player, or just compile favorites onto CD for greater user flexibility.
In all my research on the Hardy Boys, I have never come across any evidence that there was a radio program, old time or otherwise, which makes me very suspicious of this offering.
UPDATE:
It appears that this is a pirated copy of the current Hardy Boys audio books as read by Bill Irwin.
Some of those stories have been illegally posted online at Old Time Radio (OTR) web sites.
