diff -r ae4e3694c2d3 -r 533c2be1747c minesweeper/src/main/java/org/apidesign/demo/minesweeper/MinesModel.java
--- a/minesweeper/src/main/java/org/apidesign/demo/minesweeper/MinesModel.java	Sun Mar 09 15:21:42 2014 +0100
+++ b/minesweeper/src/main/java/org/apidesign/demo/minesweeper/MinesModel.java	Thu Mar 27 15:14:48 2014 +0100
@@ -39,7 +39,7 @@
     @Property(name = "state", type = MinesModel.GameState.class),
     @Property(name = "rows", type = Row.class, array = true),
 })
-final class MinesModel {
+public final class MinesModel {
     enum GameState {
         IN_PROGRESS, WON, LOST;
     }
@@ -231,7 +231,7 @@
         }
     }
     
-    private static final AudioClip TOUCH = AudioClip.create("move.mp3");
+    private static AudioClip TOUCH;
     @Function static void click(Mines model, Square data) {
         if (model.getState() != GameState.IN_PROGRESS) {
             return;
@@ -243,6 +243,9 @@
                     showAllBombs(model, SquareType.EXPLOSION);
                     model.setState(GameState.LOST);
                 } else {
+                    if (TOUCH == null) {
+                        TOUCH = AudioClip.create("move.mp3");
+                    }
                     TOUCH.play();
                     expandKnown(model, data);
                     model.computeMines();
@@ -308,5 +311,12 @@
         Square sq = columns.get(x);
         return sq.isMine() ? 1 : 0;
     }
-    
+
+    /**
+     * Called when page is ready
+     */
+    public static void main(String... args) throws Exception {
+        Mines m = new Mines();
+        m.applyBindings();
+    }
 }