I think this is a really cool idea and you should keep working on this. You're onto something. Incorporate more day to day? Include podcasts that I subscribe to as programs? So much potential.
Obviously, I'd expand this with more full-fledged shows if people liked the format. You could even configure it with "I listen to my podcasts in the morning / after noon / when I'm driving" etc in settings and Rad would factor that in when choosing when to play em.