On Sun, Mar 2, 2008 at 9:52 PM, Geoff Knauth <geoff at knauth.org> wrote: > When I show a particular slide, I want to start a sound. How hard is > this? Not very. The good Dr provides a play-sound function: http://docs.plt-scheme.org/gui/Windowing_Functions.html#(def~20((collects~20mred~20main..ss)~20play-sound)) N.