diff --git a/resources/uk/co/majenko/audiobookrecorder/icons/refresh.png b/resources/uk/co/majenko/audiobookrecorder/icons/refresh.png
new file mode 100644
index 0000000..7d297f9
Binary files /dev/null and b/resources/uk/co/majenko/audiobookrecorder/icons/refresh.png differ
diff --git a/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java b/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
index 2c93834..ad5d626 100644
--- a/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
+++ b/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
@@ -183,6 +183,8 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
     JToggleButtonSpacePlay selectCutMode;
     JButtonSpacePlay doCutSplit;
 
+    JButtonSpacePlay refreshSentence;
+
     JComboBox<KVPair<String,String>> effectChain;
 
     Thread playingThread = null;
@@ -574,6 +576,14 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
             }
         });
 
+        refreshSentence = new JButtonSpacePlay(Icons.refresh, "Refresh Phrase Data", new ActionListener() {
+            public void actionPerformed(ActionEvent evt) {
+                Debug.trace();
+                if (selectedSentence == null) return;
+                selectedSentence.refreshAllData();
+            }
+        });
+
         controlsTop.add(attention);
 
         controlsTop.add(Box.createHorizontalGlue());
@@ -586,6 +596,8 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
         controlsTop.add(new JLabel("%"));
 
         controlsTop.add(Box.createHorizontalGlue());
+    
+        controlsTop.add(refreshSentence);
 
 
         JButtonSpacePlay zoomIn = new JButtonSpacePlay(Icons.zoomIn, "Zoom In", new ActionListener() {
diff --git a/src/uk/co/majenko/audiobookrecorder/BookTreeRenderer.java b/src/uk/co/majenko/audiobookrecorder/BookTreeRenderer.java
index 0500c2e..dbebe0a 100644
--- a/src/uk/co/majenko/audiobookrecorder/BookTreeRenderer.java
+++ b/src/uk/co/majenko/audiobookrecorder/BookTreeRenderer.java
@@ -98,7 +98,7 @@ public class BookTreeRenderer extends DefaultTreeCellRenderer {
 
             String effectChain = s.getEffectChain();
             if ((effectChain != null) && (!effectChain.equals("none"))) {
-                Effect e = AudiobookRecorder.window.getBook().effects.get(effectChain);
+                Effect e = s.getBook().effects.get(effectChain);
                 if (e != null) {
                     JLabel eff = new JLabel(e.toString() + " ");
                     ctx.weightx = 0.0d;
diff --git a/src/uk/co/majenko/audiobookrecorder/Icons.java b/src/uk/co/majenko/audiobookrecorder/Icons.java
index 01b0e79..93a44f4 100644
--- a/src/uk/co/majenko/audiobookrecorder/Icons.java
+++ b/src/uk/co/majenko/audiobookrecorder/Icons.java
@@ -43,4 +43,5 @@ public class Icons {
     static public final ImageIcon queued      = new ImageIcon(Icons.class.getResource("icons/queued.png"));
     static public final ImageIcon processing  = new ImageIcon(Icons.class.getResource("icons/processing.png"));
     static public final ImageIcon close       = new ImageIcon(Icons.class.getResource("icons/close.png"));
+    static public final ImageIcon refresh     = new ImageIcon(Icons.class.getResource("icons/refresh.png"));
 }
diff --git a/src/uk/co/majenko/audiobookrecorder/Sentence.java b/src/uk/co/majenko/audiobookrecorder/Sentence.java
index e26a6c7..6bc6431 100644
--- a/src/uk/co/majenko/audiobookrecorder/Sentence.java
+++ b/src/uk/co/majenko/audiobookrecorder/Sentence.java
@@ -1762,4 +1762,21 @@ public class Sentence extends BookTreeNode implements Cacheable {
     public void setParentBook(Book b) {
         parentBook = b;
     }
+
+    public void refreshAllData() {
+        runtime = -1d;
+        peak = -1d;
+        sampleSize = -1;
+        audioData = null;
+        processedAudio = null;
+        fftProfile = null;
+        CacheManager.removeFromCache(this);
+        getProcessedAudioData();
+        getLength();
+        crossStartOffset = -1;
+        crossEndOffset = -1;
+        updateCrossings();
+        getPeakDB();
+        reloadTree();
+    }
 }