Npr Player Stops NPR Puzzle Master (May 11): Entrance -> Exit?

NPR Puzzle Master (May 11): Entrance -> Exit? - npr player stops

Today Sunday Puzzle (Will Shortz is the segment from National Public Radio: Weekend Sunday)
"Imagine you come to a seven-letter word that means". "Changing the letters of the second and fourth and you get seven letters word" end. "What words?"

If you use this facility with which you visit in May and NPR org e-mail your answer, to become an actor "in the program of the weekend and good luck!