On Demand & Listen Again
Some of the radio stations listed on the Reciva site, and on the radio, show "On Demand" content.
This is a listing of programmes that are available to listen to again - from the broadcaster.
This is similar to - but not the same as - podcasts.
The list of available content is maintained by Reciva through back-end scripting.
You cannot submit your own links to old programmes to have them available via the On Demand function.
You might be able to find a podcast URL at the broadcaster site - which you can try adding to "My Podcasts" via the Reciva site.
You might also find a URL that goes directly to the same content - which you can try adding to "My Streams" via the Reciva site.
A direct link to a programme is usually only useful if the URL remains consistent (e.g. it always refers to the latest show, rather than have a variable part that represents the date)