diff --git a/ui/src/main/java/dev/quoije/umd/ui/PlayerApp.java b/ui/src/main/java/dev/quoije/umd/ui/PlayerApp.java
index b89cf95..07d5e96 100644
--- a/ui/src/main/java/dev/quoije/umd/ui/PlayerApp.java
+++ b/ui/src/main/java/dev/quoije/umd/ui/PlayerApp.java
@@ -75,6 +75,9 @@ public final class PlayerApp extends Application {
         scene.setFill(Color.BLACK);
         stage.setTitle("useless-umd-player");
         stage.setScene(scene);
+        stage.setResizable(true);
+        stage.setMinWidth(160);
+        stage.setMinHeight(90);
         stage.show();
 
         scene.setOnKeyPressed(event -> {
@@ -274,26 +277,22 @@ public final class PlayerApp extends Application {
             g.setFill(Color.BLACK);
             g.fillRect(0, 0, canvasWidth, canvasHeight);
 
-            if (stage.isFullScreen()) {
-                // Scale up to fill the screen but keep the 16:9 display ratio.
-                double aspect = 16.0 / 9.0;
-                double canvasAspect = canvasWidth / canvasHeight;
-                double drawW;
-                double drawH;
-                if (canvasAspect > aspect) {
-                    drawH = canvasHeight;
-                    drawW = canvasHeight * aspect;
-                } else {
-                    drawW = canvasWidth;
-                    drawH = canvasWidth / aspect;
-                }
-                double x = (canvasWidth - drawW) / 2.0;
-                double y = (canvasHeight - drawH) / 2.0;
-                g.drawImage(image, x, y, drawW, drawH);
+            // Fill the window/screen while keeping the 16:9 display ratio,
+            // letterboxing or pillarboxing as needed.
+            double aspect = 16.0 / 9.0;
+            double canvasAspect = canvasWidth / canvasHeight;
+            double drawW;
+            double drawH;
+            if (canvasAspect > aspect) {
+                drawH = canvasHeight;
+                drawW = canvasHeight * aspect;
             } else {
-                // The PSP stretches the anamorphic 720x480 frame to fill 480x272.
-                g.drawImage(image, 0, 0, canvasWidth, canvasHeight);
+                drawW = canvasWidth;
+                drawH = canvasWidth / aspect;
             }
+            double x = (canvasWidth - drawW) / 2.0;
+            double y = (canvasHeight - drawH) / 2.0;
+            g.drawImage(image, x, y, drawW, drawH);
         });
     }
 
diff --git a/ui/src/main/java/dev/quoije/umd/ui/RcoRenderer.java b/ui/src/main/java/dev/quoije/umd/ui/RcoRenderer.java
index 5f681b3..e14ed28 100644
--- a/ui/src/main/java/dev/quoije/umd/ui/RcoRenderer.java
+++ b/ui/src/main/java/dev/quoije/umd/ui/RcoRenderer.java
@@ -96,6 +96,16 @@ public final class RcoRenderer implements Display {
         double h = canvas.getHeight();
         g.clearRect(0, 0, w, h);
 
+        // RCO content is authored for the PSP 480x272 screen; scale it to
+        // fill the window while keeping that aspect ratio.
+        if (w > 0 && h > 0) {
+            double scale = Math.min(w / 480.0, h / 272.0);
+            double drawW = 480.0 * scale;
+            double drawH = 272.0 * scale;
+            g.translate((w - drawW) / 2.0, (h - drawH) / 2.0);
+            g.scale(scale, scale);
+        }
+
         for (IDisplay display : snapshot) {
             draw(g, display);
         }