If I open a sound file, select all, open the listener window and enter (play), the file begins to play. If instead of (play) I enter (play-until-c-g) I get this message: unbound variable. Please advise. Perhaps I need some other preparation although s7 is the default language extension. Thx, E.C. -- Elliott Chapin http://clients.teksavvy.com/~echapin