Index: /trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/PlayHeadMarker.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/PlayHeadMarker.java	(revision 5780)
+++ /trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/PlayHeadMarker.java	(revision 5781)
@@ -273,5 +273,5 @@
         if (! enabled) return;
         if (timer == null) {
-            animationInterval = Double.parseDouble(Main.pref.get("marker.audioanimationinterval", "1")); //milliseconds
+            animationInterval = Main.pref.getDouble("marker.audioanimationinterval", "1"); //milliseconds
             timer = new Timer((int)(animationInterval * 1000.0), new ActionListener() {
                 public void actionPerformed(ActionEvent e) {