Index: trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/MarkerLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/MarkerLayer.java	(revision 549)
+++ trunk/src/org/openstreetmap/josm/gui/layer/markerlayer/MarkerLayer.java	(revision 550)
@@ -288,5 +288,5 @@
 		}
 		// apply adjustment to all subsequent audio markers in the layer
-		double adjustment = AudioPlayer.position(); // in seconds
+		double adjustment = AudioPlayer.position() - startMarker.offset; // in seconds
 		boolean seenStart = false;
 		URL url = ((AudioMarker)startMarker).url();