diff --git a/adhan-webapp/templates/debug.html b/adhan-webapp/templates/debug.html
index 9eae957..a3ce48f 100644
--- a/adhan-webapp/templates/debug.html
+++ b/adhan-webapp/templates/debug.html
@@ -276,6 +276,18 @@
         <button class="btn btn-secondary" onclick="openAdzkaarDirect()">🔗 Open Adzkaar Direct</button>
       </div>
     </div>
+
+    <div class="debug-panel">
+      <h3>🎵 Audio Test</h3>
+      <div class="status-display" id="audioTestStatus" style="height: 100px; overflow-y: auto;">
+        Test browser audio (HDMI) en Sonos...<br>
+      </div>
+      <div class="quick-actions">
+        <button class="btn btn-primary" onclick="testBrowserAudio()">🔊 Test Browser Audio (HDMI)</button>
+        <button class="btn btn-secondary" onclick="testSonosAudio()">📻 Test Sonos Audio</button>
+        <button class="btn btn-success" onclick="testBothAudio()">🎵 Test Beide</button>
+      </div>
+    </div>
   </div>
 
   <script>
@@ -580,6 +592,61 @@
       window.open('/adzkaar', '_blank', 'fullscreen=yes,scrollbars=no,resizable=no');
     }
     
+    function testBrowserAudio() {
+      log('🔊 Test browser audio (HDMI)...');
+      const audio = document.getElementById('adhanAudio');
+      if (audio) {
+        audio.play()
+          .then(() => {
+            log('✅ Browser audio gestart (HDMI)');
+            document.getElementById('audioTestStatus').innerHTML += '✅ Browser audio werkt<br>';
+          })
+          .catch(error => {
+            log(`❌ Browser audio fout: ${error.message}`);
+            document.getElementById('audioTestStatus').innerHTML += `❌ Browser audio fout: ${error.message}<br>`;
+          });
+      } else {
+        log('❌ Audio element niet gevonden');
+        document.getElementById('audioTestStatus').innerHTML += '❌ Audio element niet gevonden<br>';
+      }
+    }
+    
+    function testSonosAudio() {
+      log('📻 Test Sonos audio...');
+      fetch('/api/debug-adhaan', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ prayer: 'Test', time: 'Nu' })
+      })
+      .then(response => response.json())
+      .then(data => {
+        if (data.success) {
+          log(`✅ Sonos audio test: ${data.message}`);
+          document.getElementById('audioTestStatus').innerHTML += `✅ Sonos: ${data.message}<br>`;
+        } else {
+          log(`❌ Sonos audio fout: ${data.error}`);
+          document.getElementById('audioTestStatus').innerHTML += `❌ Sonos: ${data.error}<br>`;
+        }
+      })
+      .catch(error => {
+        log(`❌ Sonos test netwerk fout: ${error.message}`);
+        document.getElementById('audioTestStatus').innerHTML += `❌ Sonos netwerk fout: ${error.message}<br>`;
+      });
+    }
+    
+    function testBothAudio() {
+      log('🎵 Test beide audio systemen...');
+      document.getElementById('audioTestStatus').innerHTML = 'Test beide audio systemen...<br>';
+      
+      // Test browser audio eerst
+      testBrowserAudio();
+      
+      // Test Sonos audio na 2 seconden
+      setTimeout(() => {
+        testSonosAudio();
+      }, 2000);
+    }
+    
     // Update elke seconde
     setInterval(updateDebugDisplay, 1000);
     
diff --git a/done b/done
index 0bed2ea..c7e6403 100644
--- a/done
+++ b/done
@@ -69,3 +69,4 @@ Wed May 28 14:02:31 CEST 2025: Debug tijd synchronisatie toegevoegd tussen debug
 2025-05-28 19:21:23 - ✅ OPGELOST: Pi gesynchroniseerd via git pull, Docker containers herstart, Pi herstart. IP adres probleem zou nu opgelost moeten zijn.
 2025-05-28 19:24:17 - Docker volume mounts toegevoegd voor app.py, config.py en adhan_cron.py - wijzigingen worden nu direct doorgevoerd zonder rebuild
 2025-05-28 19:25:13 - ✅ Docker containers succesvol herstart met nieuwe volume mounts - IP adres probleem zou nu definitief opgelost moeten zijn
+2025-05-28 19:29:15 - HDMI audio ondersteuning toegevoegd: kiosk script forceert HDMI audio, browser autoplay enabled, audio test functies in debug pagina
diff --git a/pi-setup-desktop.sh b/pi-setup-desktop.sh
index dc3d764..c9cbaff 100644
--- a/pi-setup-desktop.sh
+++ b/pi-setup-desktop.sh
@@ -31,6 +31,14 @@ sleep 15
 
 echo "Starting Adhaan Kiosk..."
 
+# Forceer HDMI audio output
+echo "🔊 HDMI audio configureren..."
+amixer cset numid=3 2  # 0=auto, 1=headphones, 2=hdmi
+sudo raspi-config nonint do_audio 2  # Force HDMI audio
+
+# Zet volume op redelijk niveau (70%)
+amixer set PCM 70%
+
 # Start Docker containers
 cd /home/pi/adhan
 echo "Starting Docker containers..."
@@ -42,7 +50,7 @@ sleep 10
 # Sluit eventuele andere browsers
 pkill -f chromium-browser 2>/dev/null || true
 
-# Start browser in kiosk mode
+# Start browser in kiosk mode met audio optimalisaties
 echo "Starting browser..."
 DISPLAY=:0 chromium-browser \
     --kiosk \
@@ -54,6 +62,10 @@ DISPLAY=:0 chromium-browser \
     --disable-restore-session-state \
     --disable-web-security \
     --disable-features=VizDisplayCompositor \
+    --autoplay-policy=no-user-gesture-required \
+    --allow-running-insecure-content \
+    --disable-background-timer-throttling \
+    --disable-renderer-backgrounding \
     http://localhost:5090 &
 
 echo "Kiosk started!"