Well, I searched sesamestreet.org and youtube for clips pictured on the cover for runtimes, and from what I could find the cover covers at least 52 minutes. I added the run time for the non-celebrity version of Monster in the Mirror, which is 2 minutes and something seconds (the celebrity version is 3 minutes and something seconds). I also checked the CTW Archives "first season show content" for the run time of Henson #1 (though the times listed for skits in those files seem to contradict the run times found at sesamestreet.org). I chose not to look at run time for any of the street stories, as we do not know how much of the stories will be included, but I did look at the run time for Hooper's death, as I have a feeling that'll probably just have the scene where his death is explained.
I'm not sure if this was useless or not. I calculated using my cell phone calculator... But I wodner if I goofed. I used a . instead of a : and then I found that that simbol was there. Maybe I should re-do it.