diff --git a/src/main/java/sh/ball/gui/Settable.java b/src/main/java/sh/ball/gui/Settable.java
deleted file mode 100644
index 5f98c69f..00000000
--- a/src/main/java/sh/ball/gui/Settable.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package sh.ball.gui;
-
-@FunctionalInterface
-public interface Settable<T> {
-
-  void set(T value);
-}
diff --git a/src/main/java/sh/ball/gui/controller/EffectsController.java b/src/main/java/sh/ball/gui/controller/EffectsController.java
index 8ac55082..5c4be1ec 100644
--- a/src/main/java/sh/ball/gui/controller/EffectsController.java
+++ b/src/main/java/sh/ball/gui/controller/EffectsController.java
@@ -22,7 +22,7 @@ import java.util.*;
 
 import static sh.ball.gui.Gui.audioPlayer;
 
-public class EffectsController implements Initializable {
+public class EffectsController implements Initializable, SubController {
 
   private static final int DEFAULT_SAMPLE_RATE = 192000;
 
@@ -79,6 +79,7 @@ public class EffectsController implements Initializable {
     this.wobbleEffect = new WobbleEffect(DEFAULT_SAMPLE_RATE);
   }
 
+  @Override
   public Map<SVGPath, Slider> getMidiButtonMap() {
     return Map.of(
       vectorCancellingMidi, vectorCancellingSlider,
@@ -199,19 +200,22 @@ public class EffectsController implements Initializable {
     traceCheckBox.selectedProperty().addListener(traceListener);
   }
 
-  public List<CheckBox> checkBoxes() {
+  private List<CheckBox> checkBoxes() {
     return List.of(vectorCancellingCheckBox, bitCrushCheckBox, verticalDistortCheckBox,
       horizontalDistortCheckBox, wobbleCheckBox, smoothCheckBox, traceCheckBox);
   }
+  @Override
   public List<Slider> sliders() {
     return List.of(vectorCancellingSlider, bitCrushSlider, verticalDistortSlider,
       horizontalDistortSlider, wobbleSlider, smoothSlider, traceSlider);
   }
+  @Override
   public List<String> labels() {
     return List.of("vectorCancelling", "bitCrush", "verticalDistort", "horizontalDistort",
       "wobble", "smooth", "trace");
   }
 
+  @Override
   public Element save(Document document) {
     Element element = document.createElement("checkBoxes");
     List<CheckBox> checkBoxes = checkBoxes();
@@ -226,6 +230,7 @@ public class EffectsController implements Initializable {
     return element;
   }
 
+  @Override
   public void load(Element root) {
     Element element = (Element) root.getElementsByTagName("checkBoxes").item(0);
     List<CheckBox> checkBoxes = checkBoxes();
diff --git a/src/main/java/sh/ball/gui/controller/GeneralController.java b/src/main/java/sh/ball/gui/controller/GeneralController.java
index a9d71545..f95b35c9 100644
--- a/src/main/java/sh/ball/gui/controller/GeneralController.java
+++ b/src/main/java/sh/ball/gui/controller/GeneralController.java
@@ -12,6 +12,8 @@ import javafx.stage.DirectoryChooser;
 import javafx.stage.FileChooser;
 import javafx.stage.Stage;
 import javafx.util.Duration;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
 import org.xml.sax.SAXException;
 import sh.ball.audio.engine.AudioDevice;
 
@@ -29,7 +31,7 @@ import java.util.*;
 import static sh.ball.gui.Gui.audioPlayer;
 import static sh.ball.gui.Gui.defaultDevice;
 
-public class GeneralController implements Initializable {
+public class GeneralController implements Initializable, SubController {
 
   private MainController mainController;
 
@@ -312,6 +314,7 @@ public class GeneralController implements Initializable {
     });
   }
 
+  @Override
   public Map<SVGPath, Slider> getMidiButtonMap() {
     return Map.of(octaveMidi, octaveSlider);
   }
@@ -328,14 +331,36 @@ public class GeneralController implements Initializable {
     );
   }
 
+  @Override
   public List<Slider> sliders() {
     return List.of(octaveSlider);
   }
 
+  @Override
   public List<String> labels() {
     return List.of("octave");
   }
 
+  @Override
+  public Element save(Document document) {
+    Element element = document.createElement("general");
+    Element frameRate = document.createElement("frameRate");
+    frameRate.appendChild(document.createTextNode(Integer.toString(this.frameRate)));
+    element.appendChild(frameRate);
+    return element;
+  }
+
+  @Override
+  public void load(Element root) {
+    Element element = (Element) root.getElementsByTagName("general").item(0);
+    if (element != null) {
+      Element frameRate = (Element) element.getElementsByTagName("frameRate").item(0);
+      if (frameRate != null) {
+        this.frameRate = Integer.parseInt(frameRate.getTextContent());
+      }
+    }
+  }
+
   public void setFrameSourceName(String name) {
     this.frameSourceName = name;
   }
diff --git a/src/main/java/sh/ball/gui/controller/ImageController.java b/src/main/java/sh/ball/gui/controller/ImageController.java
index c995f404..8b7db668 100644
--- a/src/main/java/sh/ball/gui/controller/ImageController.java
+++ b/src/main/java/sh/ball/gui/controller/ImageController.java
@@ -25,7 +25,7 @@ import java.util.function.Consumer;
 import static sh.ball.gui.Gui.audioPlayer;
 import static sh.ball.math.Math.tryParse;
 
-public class ImageController implements Initializable {
+public class ImageController implements Initializable, SubController {
 
   private static final double MAX_FREQUENCY = 12000;
   private static final int DEFAULT_SAMPLE_RATE = 192000;
@@ -109,6 +109,7 @@ public class ImageController implements Initializable {
     audioPlayer.setVolume(volumeSlider.valueProperty());
   }
 
+  @Override
   public Map<SVGPath, Slider> getMidiButtonMap() {
     return Map.of(
       frequencyMidi, frequencySlider,
@@ -119,16 +120,19 @@ public class ImageController implements Initializable {
     );
   }
 
+  @Override
   public List<Slider> sliders() {
     return List.of(frequencySlider, rotateSpeedSlider, translationSpeedSlider,
       volumeSlider, visibilitySlider);
   }
 
+  @Override
   public List<String> labels() {
     return List.of("frequency", "rotateSpeed", "translationSpeed", "volume",
       "visibility");
   }
 
+  @Override
   public Element save(Document document) {
     Element element = document.createElement("translation");
     Element x = document.createElement("x");
@@ -140,6 +144,7 @@ public class ImageController implements Initializable {
     return element;
   }
 
+  @Override
   public void load(Element root) {
     Element element = (Element) root.getElementsByTagName("translation").item(0);
     Element x = (Element) element.getElementsByTagName("x").item(0);
diff --git a/src/main/java/sh/ball/gui/controller/MainController.java b/src/main/java/sh/ball/gui/controller/MainController.java
index de2d16fc..77e1fee0 100644
--- a/src/main/java/sh/ball/gui/controller/MainController.java
+++ b/src/main/java/sh/ball/gui/controller/MainController.java
@@ -112,13 +112,14 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   // control if they are selected.
   private Map<SVGPath, Slider> initializeMidiButtonMap() {
     Map<SVGPath, Slider> midiMap = new HashMap<>();
-    midiMap.putAll(generalController.getMidiButtonMap());
-    midiMap.putAll(imageController.getMidiButtonMap());
-    midiMap.putAll(objController.getMidiButtonMap());
-    midiMap.putAll(effectsController.getMidiButtonMap());
+    subControllers().forEach(controller -> midiMap.putAll(controller.getMidiButtonMap()));
     return midiMap;
   }
 
+  private List<SubController> subControllers() {
+    return List.of(effectsController, objController, imageController, generalController);
+  }
+
   @Override
   public void initialize(URL url, ResourceBundle resourceBundle) {
     objController.setAudioProducer(producer);
@@ -404,28 +405,14 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
   }
 
   // must be functions, otherwise they are not initialised
-  private List<Slider> otherSliders() {
+  private List<Slider> sliders() {
     List<Slider> sliders = new ArrayList<>();
-    sliders.addAll(generalController.sliders());
-    sliders.addAll(imageController.sliders());
-    sliders.addAll(objController.sliders());
+    subControllers().forEach(controller -> sliders.addAll(controller.sliders()));
     return sliders;
   }
-  private List<String> otherLabels() {
+  private List<String> labels() {
     List<String> labels = new ArrayList<>();
-    labels.addAll(generalController.labels());
-    labels.addAll(imageController.labels());
-    labels.addAll(objController.labels());
-    return labels;
-  }
-  private List<Slider> allSliders() {
-    List<Slider> sliders = new ArrayList<>(effectsController.sliders());
-    sliders.addAll(otherSliders());
-    return sliders;
-  }
-  private List<String> allLabels() {
-    List<String> labels = new ArrayList<>(effectsController.labels());
-    labels.addAll(otherLabels());
+    subControllers().forEach(controller -> labels.addAll(controller.labels()));
     return labels;
   }
 
@@ -455,14 +442,13 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       Element root = document.createElement("project");
       document.appendChild(root);
 
-      List<Slider> sliders = allSliders();
-      List<String> labels = allLabels();
+      List<Slider> sliders = sliders();
+      List<String> labels = labels();
 
       Element slidersElement = document.createElement("sliders");
       appendSliders(sliders, labels, slidersElement, document);
       root.appendChild(slidersElement);
 
-      root.appendChild(effectsController.save(document));
 
       Element midiElement = document.createElement("midi");
       for (Map.Entry<Integer, SVGPath> entry : CCMap.entrySet()) {
@@ -475,9 +461,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       }
       root.appendChild(midiElement);
 
-      root.appendChild(imageController.save(document));
-
-      root.appendChild(objController.save(document));
+      subControllers().forEach(controller -> root.appendChild(controller.save(document)));
 
       Element filesElement = document.createElement("files");
       for (int i = 0; i < openFiles.size(); i++) {
@@ -521,8 +505,8 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       Document document = documentBuilder.parse(new File(projectFileName));
       document.getDocumentElement().normalize();
 
-      List<Slider> sliders = allSliders();
-      List<String> labels = allLabels();
+      List<Slider> sliders = sliders();
+      List<String> labels = labels();
 
       // Disable cycling through frames
       generalController.disablePlayback();
@@ -531,7 +515,6 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       Element slidersElement = (Element) root.getElementsByTagName("sliders").item(0);
       loadSliderValues(sliders, labels, slidersElement);
 
-      effectsController.load(root);
 
       Element midiElement = (Element) root.getElementsByTagName("midi").item(0);
       resetCCMap();
@@ -549,9 +532,7 @@ public class MainController implements Initializable, FrequencyListener, MidiLis
       }
       root.appendChild(midiElement);
 
-      imageController.load(root);
-
-      objController.load(root);
+      subControllers().forEach(controller -> controller.load(root));
 
       Element filesElement = (Element) root.getElementsByTagName("files").item(0);
       List<byte[]> files = new ArrayList<>();
diff --git a/src/main/java/sh/ball/gui/controller/ObjController.java b/src/main/java/sh/ball/gui/controller/ObjController.java
index 2f1c4c37..3886255a 100644
--- a/src/main/java/sh/ball/gui/controller/ObjController.java
+++ b/src/main/java/sh/ball/gui/controller/ObjController.java
@@ -15,7 +15,7 @@ import sh.ball.shapes.Shape;
 import java.net.URL;
 import java.util.*;
 
-public class ObjController implements Initializable {
+public class ObjController implements Initializable, SubController {
 
   private Vector3 rotation = new Vector3(2 * Math.PI, 2 * Math.PI, 0);
   private FrameProducer<List<Shape>> producer;
@@ -31,6 +31,7 @@ public class ObjController implements Initializable {
   @FXML
   private CheckBox rotateCheckBox;
 
+  @Override
   public Map<SVGPath, Slider> getMidiButtonMap() {
     return Map.of(
       focalLengthMidi, focalLengthSlider,
@@ -94,14 +95,17 @@ public class ObjController implements Initializable {
     );
   }
 
+  @Override
   public List<Slider> sliders() {
     return List.of(focalLengthSlider, objectRotateSpeedSlider);
   }
 
+  @Override
   public List<String> labels() {
     return List.of("focalLength", "objectRotateSpeed");
   }
 
+  @Override
   public Element save(Document document) {
     Element element = document.createElement("objectRotation");
     Element x = document.createElement("x");
@@ -116,6 +120,7 @@ public class ObjController implements Initializable {
     return element;
   }
 
+  @Override
   public void load(Element root) {
     Element element = (Element) root.getElementsByTagName("objectRotation").item(0);
     Element x = (Element) element.getElementsByTagName("x").item(0);
diff --git a/src/main/java/sh/ball/gui/controller/SubController.java b/src/main/java/sh/ball/gui/controller/SubController.java
new file mode 100644
index 00000000..8cb4788c
--- /dev/null
+++ b/src/main/java/sh/ball/gui/controller/SubController.java
@@ -0,0 +1,22 @@
+package sh.ball.gui.controller;
+
+import javafx.scene.control.Slider;
+import javafx.scene.shape.SVGPath;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import java.util.List;
+import java.util.Map;
+
+public interface SubController {
+
+  Map<SVGPath, Slider> getMidiButtonMap();
+
+  List<Slider> sliders();
+
+  List<String> labels();
+
+  Element save(Document document);
+
+  void load(Element root);
+}