diff --git a/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java b/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
index 51d8485..efb8a2a 100644
--- a/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
+++ b/src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java
@@ -3252,7 +3252,7 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
                 }
 
                 File archiveFile = new File(archiveDir, name + ".abz");
-                System.err.println("Archiving to " + archiveFile.getAbsolutePath());
+                Debug.d("Archiving to", archiveFile.getAbsolutePath());
                 if (archiveFile.exists()) {
                     archiveFile.delete();
                 }
@@ -3674,7 +3674,7 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
         } else if (type.equals("highshelf")) {
             bq.setType(Biquad.Highshelf);
         } else {
-            System.err.println("Bad Biquad type: " + type);
+            Debug.d("Bad Biquad type:", type);
             return null;
         }
 
@@ -3969,7 +3969,7 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
         Debug.trace();
         try {
             if (selectedSentence == null) {
-                System.err.println("Selected sentence is NULL in split. That CANNOT happen!");
+                Debug.d("Selected sentence is NULL in split. That CANNOT happen!");
                 return;
             }
             Chapter c = (Chapter)selectedSentence.getParent();
@@ -4027,7 +4027,7 @@ public class AudiobookRecorder extends JFrame implements DocumentListener {
     public void setEffectsEnabled(boolean b) {
         Debug.trace();
         effectsEnabled = b;
-        System.err.println("Effects Enabled: " + b);
+        Debug.d("Effects Enabled:", b);
     }
 
     public void setBookNotes(String text) {
diff --git a/src/uk/co/majenko/audiobookrecorder/BookInfoPanel.java b/src/uk/co/majenko/audiobookrecorder/BookInfoPanel.java
index d24a9c2..9f1cca7 100644
--- a/src/uk/co/majenko/audiobookrecorder/BookInfoPanel.java
+++ b/src/uk/co/majenko/audiobookrecorder/BookInfoPanel.java
@@ -83,7 +83,6 @@ public class BookInfoPanel extends JPanel {
         Pattern p = Pattern.compile("\\/titleview\\/([A-Z0-9]{14})");
         Matcher m = p.matcher(acx.getText());
         if (m.find()) {
-            System.err.println(m);
             return m.group(1);
         }
         return acx.getText();
diff --git a/src/uk/co/majenko/audiobookrecorder/OpenBookPanel.java b/src/uk/co/majenko/audiobookrecorder/OpenBookPanel.java
index 822bd11..7c82349 100644
--- a/src/uk/co/majenko/audiobookrecorder/OpenBookPanel.java
+++ b/src/uk/co/majenko/audiobookrecorder/OpenBookPanel.java
@@ -121,7 +121,7 @@ public class OpenBookPanel extends JPanel {
                             c = c.getParent();
                         }
                         if (c == null) {
-                            System.err.println("Could not get option pane!");
+                            Debug.d("Could not get option pane!");
                         } else {
                             JOptionPane op = (JOptionPane)c;
                             op.setValue(JOptionPane.OK_OPTION);
diff --git a/src/uk/co/majenko/audiobookrecorder/Options.java b/src/uk/co/majenko/audiobookrecorder/Options.java
index 7968cc2..bf8c60a 100644
--- a/src/uk/co/majenko/audiobookrecorder/Options.java
+++ b/src/uk/co/majenko/audiobookrecorder/Options.java
@@ -722,7 +722,7 @@ public class Options extends JDialog {
         } else if (value instanceof Boolean) {
             set(key, (Boolean)value);
         } else {
-            System.err.println("Bad type for key " + key);
+            Debug.d("Bad type for key", key);
         }
     }
 
diff --git a/src/uk/co/majenko/audiobookrecorder/Utils.java b/src/uk/co/majenko/audiobookrecorder/Utils.java
index 3723de5..7ce4e0d 100644
--- a/src/uk/co/majenko/audiobookrecorder/Utils.java
+++ b/src/uk/co/majenko/audiobookrecorder/Utils.java
@@ -70,7 +70,7 @@ public class Utils {
         long t = System.currentTimeMillis();
         long d = t - millis;
         millis = t;
-        System.err.println(String.format("%10d - %10s : %8d | %8d | %8d", d, tag,
+        Debug.d(String.format("%10d - %10s : %8d | %8d | %8d", d, tag,
             Runtime.getRuntime().totalMemory(),
             Runtime.getRuntime().maxMemory(),
             Runtime.getRuntime().freeMemory()
diff --git a/src/uk/co/majenko/audiobookrecorder/VersionChecker.java b/src/uk/co/majenko/audiobookrecorder/VersionChecker.java
index 05b58e1..4fddeec 100644
--- a/src/uk/co/majenko/audiobookrecorder/VersionChecker.java
+++ b/src/uk/co/majenko/audiobookrecorder/VersionChecker.java
@@ -55,10 +55,6 @@ public class VersionChecker implements Runnable {
 
             if (Utils.s2i(installedVersion) >= Utils.s2i(availableVersion)) return;
             
-            System.err.println("Version installed: " + installed);
-            System.err.println("Version available: " + available);
-            System.err.println("URL: " + website);
-
             JButton upgrade = new JButton("A new version is available.");
             upgrade.addActionListener(new ActionListener() {
                 public void actionPerformed(ActionEvent evt) {