I do have access to the old atu2.com collector's stuff (as I'm on staff over there, and I was part of the staff back when they did the collectors thing - I worked on the price guide...) Not remembering that particular one but I'll take a look to see what I can dig out. Thanks for reminding me of that.
Most of the radio shows arrived on LP back in the day, and CDs from about 1990 onwards. Now a days most are being delivered electronically however there are a few odd CDs still around.
I do have a few of the bigger ones such as a Westwood One release of "Zoo TV in Sydney" and "Zoo TV in Dublin". And a couple of the releases from the more recent "Three Nights" promo that was done leading into the release of "No Line on the Horizon". I also have an old copy of the King Biscuit stuff as well.
When I was talking series I'll give you an example - BBC Classic Tracks was one of these. Each week there would be a show issued for air. Often they reused the same material a number of times. Thus the old Hammersmith Odeon material from '82 appeared a number of times on this show, each gaining it's own disc. Although there was a second show cut from the Hammersmith Odeon stuff, so not every "BBC Classic Tracks" had the same setlist. You'd need to track down two copies of the disc to get the whole thing for instance. Maybe the best way to do it would be to have one listing for each unique show - thus if the show just reused material from an earlier show contain it all in one discography entry...