To follow up on this - I hear Brian got a lot of responses, so I want to say thanks to everyone offering to help out with it!
The radio program is now online at
http://www.wcpn.org/index.php/WCPN/an/31501/If you want to skip directly to the part about SP, it starts around 28:30 (halfway through). You'll need to let the stream load for a while before you can jump forward. The segment is about 20 minutes long.
It includes performances by Mercury Summer Stock cast members of "The Riddle", "Only Love" and a short version of "You Are My Home", and discussion with the director, the star, and yes... one of us. This could give you a taste of the show, if you're still considering heading to Cleveland.
All the best,
Peter