diff --git a/demos/cast/src/main/java/androidx/media3/demo/cast/MainActivity.java b/demos/cast/src/main/java/androidx/media3/demo/cast/MainActivity.java
index ae49a6f45a..ab51c2a87c 100644
--- a/demos/cast/src/main/java/androidx/media3/demo/cast/MainActivity.java
+++ b/demos/cast/src/main/java/androidx/media3/demo/cast/MainActivity.java
@@ -25,6 +25,7 @@ import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
+import android.widget.SeekBar;
 import android.widget.TextView;
 import android.widget.Toast;
 import androidx.annotation.Nullable;
@@ -85,6 +86,22 @@ public class MainActivity extends AppCompatActivity
     playerView = findViewById(R.id.player_view);
     playerView.requestFocus();
 
+    SeekBar volume = findViewById(R.id.volume_bar);
+    volume.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+      @Override
+      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+      }
+
+      @Override
+      public void onStartTrackingTouch(SeekBar seekBar) {
+      }
+
+      @Override
+      public void onStopTrackingTouch(SeekBar seekBar) {
+        playerView.getPlayer().setVolume(seekBar.getProgress() / 100f);
+      }
+    });
+
     mediaQueueList = findViewById(R.id.sample_list);
     ItemTouchHelper helper = new ItemTouchHelper(new RecyclerViewCallback());
     helper.attachToRecyclerView(mediaQueueList);
diff --git a/demos/cast/src/main/res/layout/main_activity.xml b/demos/cast/src/main/res/layout/main_activity.xml
index 81320bb75b..5778e6a2e4 100644
--- a/demos/cast/src/main/res/layout/main_activity.xml
+++ b/demos/cast/src/main/res/layout/main_activity.xml
@@ -27,6 +27,12 @@
       android:background="@android:color/black"
       app:repeat_toggle_modes="all|one"/>
 
+  <SeekBar android:id="@+id/volume_bar"
+    android:layout_width="match_parent"
+    android:layout_height="48dp"
+    android:min="0"
+    android:max="100"/>
+
   <RelativeLayout android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="1">