I've looked through the list of available podcasts and Shorty isn't there:
http://www.bbc.co.uk/podcasts/series/jazzlibnz
Mind you, the tracks played on the original 1 hour radio shows were severely trimmed to get the podcasts down to about 35 mins. The Shorty was a great one - he must have been the s-l-o-w-e-s-t (and coolest) speaker they ever had on the show. Great stories, too - like how "Martians Go Home" was inspired by grafitti in the men's room.