Rob Bamberger, host of Hot Jazz Saturday Night on WAMU in Washington DC, had a 3 hour show last Saturday exclusively on Django. Music and history. You can listen at:http://wamu.org/programs/hjsn/
But get there quick as I think it expires soon, maybe today or tomorrow and there are no podcasts or archive that I know of. I haven't listened to the whole thing yet myself, but what I heard was excellent, no nonsense stuff.