On Thursday at 10pm (April 10), the eve of Satyagraha’s premiere at the Met, WNYC will be re-broadcasting the excellent episode of the Fishko Files "An Hour with Philip Glass".  Before 10pm they will be playing a wide selection of Glass compositions.  Of course you can listen on their website. 
Then next week, April 16, John Schaefer will have Philip Glass and cellist Wendy Sutter in studio on new Sounds discussing the new work and recording, Songs and Poems for Solo Cello.