diff --git a/desktop/src/zero1hd/rhythmbullet/desktop/graphics/ui/components/Visualizer.java b/desktop/src/zero1hd/rhythmbullet/desktop/graphics/ui/components/Visualizer.java
index 1e7287c..28b5cba 100755
--- a/desktop/src/zero1hd/rhythmbullet/desktop/graphics/ui/components/Visualizer.java
+++ b/desktop/src/zero1hd/rhythmbullet/desktop/graphics/ui/components/Visualizer.java
@@ -97,9 +97,9 @@ public class Visualizer extends Widget implements Disposable {
 	}
 	
 	private int updateBufferPosition() {
-		int pos = (int) ((alGetSourcef(sourceID, AL11.AL_SAMPLE_OFFSET))-mm.getReadWindowSize()*mm.getChannelCount());
+		int pos = (int) ((alGetSourcef(sourceID, AL11.AL_SAMPLE_OFFSET))-(mm.getReadWindowSize()*mm.getChannelCount()));
 		try {
-			readWindowIndex = mm.getPlaybackIndexPosition();
+			readWindowIndex = mm.getPlaybackIndexPosition()-1;
 			buffer.position(pos);
 		} catch (IllegalArgumentException iae) {
 			buffer.position(0);