diff --git a/android/src/components/MessageText.tsx b/android/src/components/MessageText.tsx
new file mode 100644
index 0000000..967f6be
--- /dev/null
+++ b/android/src/components/MessageText.tsx
@@ -0,0 +1,90 @@
+/**
+ * MessageText — rendert Chat-Text mit Auto-Linkifizierung:
+ *   - http(s)://... → tippbar, oeffnet im Browser
+ *   - mailto: oder plain E-Mail → tippbar, oeffnet Mail-App
+ *   - Telefonnummern → tippbar, oeffnet Android-Dialer
+ *
+ * Text ist durchgaengig markierbar/kopierbar (selectable).
+ */
+
+import React from 'react';
+import { Text, Linking, TextStyle, StyleProp } from 'react-native';
+
+// Regex kombiniert URL | Email | Telefonnummer.
+// Gruppenreihenfolge ist wichtig fuer die Erkennung unten.
+//
+// URL: http://... oder https://... bis zum ersten Whitespace / Anfuehrungszeichen.
+// Email: simpler Standard-Match (kein RFC-kompatibel aber gut genug).
+// Telefon: internationale Form (+49..., 0049..., 0176...), darf Leerzeichen
+//         / Bindestriche / Schraegstriche / Klammern enthalten, mindestens 7
+//         Ziffern insgesamt. Vermeidet banale Zahlen (Uhrzeiten, Datum).
+const LINK_REGEX = new RegExp(
+  '(https?:\\/\\/[^\\s<>"]+)' +                                // 1: URL
+  '|([A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,})' +        // 2: Email
+  '|((?:\\+|00)\\d[\\d\\s()\\-\\/]{6,}\\d|0\\d{2,4}[\\s\\/\\-]?[\\d\\s\\-\\/]{5,}\\d)', // 3: Telefon
+  'g',
+);
+
+const LINK_STYLE = { color: '#0096FF', textDecorationLine: 'underline' } as TextStyle;
+
+interface Segment {
+  text: string;
+  kind: 'text' | 'url' | 'email' | 'phone';
+}
+
+function tokenize(raw: string): Segment[] {
+  const out: Segment[] = [];
+  let lastEnd = 0;
+  LINK_REGEX.lastIndex = 0;
+  let m: RegExpExecArray | null;
+  while ((m = LINK_REGEX.exec(raw)) !== null) {
+    if (m.index > lastEnd) {
+      out.push({ text: raw.slice(lastEnd, m.index), kind: 'text' });
+    }
+    if (m[1]) out.push({ text: m[1], kind: 'url' });
+    else if (m[2]) out.push({ text: m[2], kind: 'email' });
+    else if (m[3]) out.push({ text: m[3], kind: 'phone' });
+    lastEnd = LINK_REGEX.lastIndex;
+  }
+  if (lastEnd < raw.length) out.push({ text: raw.slice(lastEnd), kind: 'text' });
+  return out;
+}
+
+function onPress(seg: Segment) {
+  try {
+    if (seg.kind === 'url') {
+      Linking.openURL(seg.text);
+    } else if (seg.kind === 'email') {
+      Linking.openURL(`mailto:${seg.text}`);
+    } else if (seg.kind === 'phone') {
+      // Android-Dialer erwartet tel:-Schema ohne Leerzeichen/Bindestriche
+      const clean = seg.text.replace(/[\s\-\/()]/g, '');
+      Linking.openURL(`tel:${clean}`);
+    }
+  } catch {}
+}
+
+interface Props {
+  text: string;
+  style?: StyleProp<TextStyle>;
+}
+
+const MessageText: React.FC<Props> = ({ text, style }) => {
+  const segments = React.useMemo(() => tokenize(text), [text]);
+  return (
+    <Text style={style} selectable>
+      {segments.map((seg, i) => {
+        if (seg.kind === 'text') {
+          return <Text key={i}>{seg.text}</Text>;
+        }
+        return (
+          <Text key={i} style={LINK_STYLE} onPress={() => onPress(seg)}>
+            {seg.text}
+          </Text>
+        );
+      })}
+    </Text>
+  );
+};
+
+export default MessageText;
diff --git a/android/src/screens/ChatScreen.tsx b/android/src/screens/ChatScreen.tsx
index 8f156db..06698cb 100644
--- a/android/src/screens/ChatScreen.tsx
+++ b/android/src/screens/ChatScreen.tsx
@@ -29,7 +29,8 @@ import updateService from '../services/updater';
 import VoiceButton from '../components/VoiceButton';
 import FileUpload, { FileData } from '../components/FileUpload';
 import CameraUpload, { PhotoData } from '../components/CameraUpload';
-import { RecordingResult, loadConvWindowMs } from '../services/audio';
+import MessageText from '../components/MessageText';
+import { RecordingResult, loadConvWindowMs, loadTtsSpeed, TTS_SPEED_DEFAULT } from '../services/audio';
 import Geolocation from '@react-native-community/geolocation';
 
 // --- Typen ---
@@ -116,6 +117,13 @@ const ChatScreen: React.FC = () => {
   const [ttsMuted, setTtsMuted] = useState(false);
   // Gerätelokale XTTS-Voice-Wahl (bevorzugt gegenueber dem globalen Default)
   const localXttsVoiceRef = useRef<string>('');
+  // Geraetelokale TTS-Wiedergabegeschwindigkeit (speed-Param an F5-TTS)
+  const ttsSpeedRef = useRef<number>(TTS_SPEED_DEFAULT);
+  // Spiegelung der TTS-Settings in einer Ref — damit die onMessage-Closure
+  // (useEffect mit []-deps) IMMER die aktuellen Werte sieht. Ohne Ref
+  // bliebe canPlay auf dem Mount-Initial-Wert haengen (mute ignoriert,
+  // oder AsyncStorage-Load nicht beruecksichtigt).
+  const ttsCanPlayRef = useRef<boolean>(true);
 
   const flatListRef = useRef<FlatList>(null);
   const messageIdCounter = useRef(0);
@@ -135,6 +143,7 @@ const ChatScreen: React.FC = () => {
       setTtsMuted(muted === 'true'); // default false
       const voice = await AsyncStorage.getItem('aria_xtts_voice');
       localXttsVoiceRef.current = voice || '';
+      ttsSpeedRef.current = await loadTtsSpeed();
     };
     loadTtsSettings();
     // Poll alle 2s um Settings-Aenderung mitzubekommen (einfache Loesung ohne Context)
@@ -147,6 +156,12 @@ const ChatScreen: React.FC = () => {
     wakeWordService.loadFromStorage().catch(() => {});
   }, []);
 
+  // ttsCanPlayRef live aktuell halten — Closure in onMessage unten liest
+  // darueber statt direkt ttsDeviceEnabled/ttsMuted (sonst stale).
+  useEffect(() => {
+    ttsCanPlayRef.current = ttsDeviceEnabled && !ttsMuted;
+  }, [ttsDeviceEnabled, ttsMuted]);
+
   const toggleMute = useCallback(() => {
     setTtsMuted(prev => {
       const next = !prev;
@@ -299,7 +314,8 @@ const ChatScreen: React.FC = () => {
       }
 
       // TTS-Audio abspielen wenn vorhanden — respektiert geraetelokalen Mute/Disable
-      const canPlay = ttsDeviceEnabled && !ttsMuted;
+      // WICHTIG: via Ref statt direkt state lesen, sonst ist's stale (Closure-Bug).
+      const canPlay = ttsCanPlayRef.current;
       if (message.type === 'audio' && message.payload.base64) {
         const b64 = message.payload.base64 as string;
         const refId = (message.payload.messageId as string) || '';
@@ -439,6 +455,7 @@ const ChatScreen: React.FC = () => {
           durationMs: result.durationMs,
           mimeType: result.mimeType,
           voice: localXttsVoiceRef.current,
+          speed: ttsSpeedRef.current,
           ...(location && { location }),
         });
         // resume() wird durch onPlaybackFinished nach ARIAs Antwort getriggert.
@@ -460,7 +477,12 @@ const ChatScreen: React.FC = () => {
   // Wake Word Toggle Handler
   const toggleWakeWord = useCallback(async () => {
     if (wakeWordActive) {
-      wakeWordService.stop();
+      // Vor Porcupine-Stop: eventuelle laufende Aufnahme abbrechen. Sonst
+      // bleibt audioService.recordingState=='recording' haengen und der
+      // normale Aufnahme-Button wirkt nicht mehr (startRecording lehnt
+      // ab weil "Aufnahme laeuft bereits").
+      try { await audioService.stopRecording(); } catch {}
+      await wakeWordService.stop();
       setWakeWordActive(false);
     } else {
       const started = await wakeWordService.start();
@@ -550,6 +572,7 @@ const ChatScreen: React.FC = () => {
     rvs.send('chat', {
       text,
       voice: localXttsVoiceRef.current,
+      speed: ttsSpeedRef.current,
       ...(location && { location }),
     });
   }, [inputText, getCurrentLocation, pendingAttachments, sendPendingAttachments]);
@@ -659,6 +682,7 @@ const ChatScreen: React.FC = () => {
       rvs.send('chat', {
         text: messageText,
         voice: localXttsVoiceRef.current,
+        speed: ttsSpeedRef.current,
         ...(location && { location }),
       });
     }
@@ -733,9 +757,10 @@ const ChatScreen: React.FC = () => {
         ))}
         {/* Text (nicht anzeigen wenn nur "Anhang empfangen" und ein Bild da ist) */}
         {!(item.text === 'Anhang empfangen' && item.attachments?.some(a => a.type === 'image' && a.uri)) && (
-          <Text style={[styles.messageText, isUser ? styles.userText : styles.ariaText]}>
-            {item.text}
-          </Text>
+          <MessageText
+            text={item.text}
+            style={[styles.messageText, isUser ? styles.userText : styles.ariaText]}
+          />
         )}
         {/* Play-Button fuer ARIA-Nachrichten — Cache bevorzugt, sonst Bridge-TTS mit aktueller Engine */}
         {!isUser && item.text.length > 0 && (
@@ -750,6 +775,7 @@ const ChatScreen: React.FC = () => {
                 rvs.send('tts_request' as any, {
                   text: item.text,
                   voice: localXttsVoiceRef.current,
+                  speed: ttsSpeedRef.current,
                   messageId: item.messageId || '',
                 });
               }
diff --git a/android/src/screens/SettingsScreen.tsx b/android/src/screens/SettingsScreen.tsx
index d5bd7e3..3d91db6 100644
--- a/android/src/screens/SettingsScreen.tsx
+++ b/android/src/screens/SettingsScreen.tsx
@@ -35,6 +35,10 @@ import {
   CONV_WINDOW_MIN_SEC,
   CONV_WINDOW_MAX_SEC,
   CONV_WINDOW_STORAGE_KEY,
+  TTS_SPEED_DEFAULT,
+  TTS_SPEED_MIN,
+  TTS_SPEED_MAX,
+  TTS_SPEED_STORAGE_KEY,
 } from '../services/audio';
 import wakeWordService, {
   BUILTIN_KEYWORDS,
@@ -98,6 +102,7 @@ const SettingsScreen: React.FC = () => {
   const [ttsPrerollSec, setTtsPrerollSec] = useState<number>(TTS_PREROLL_DEFAULT_SEC);
   const [vadSilenceSec, setVadSilenceSec] = useState<number>(VAD_SILENCE_DEFAULT_SEC);
   const [convWindowSec, setConvWindowSec] = useState<number>(CONV_WINDOW_DEFAULT_SEC);
+  const [ttsSpeed, setTtsSpeed] = useState<number>(TTS_SPEED_DEFAULT);
   const [wakeAccessKey, setWakeAccessKey] = useState<string>('');
   const [wakeAccessKeyVisible, setWakeAccessKeyVisible] = useState(false);
   const [wakeKeyword, setWakeKeyword] = useState<string>(DEFAULT_KEYWORD);
@@ -153,6 +158,12 @@ const SettingsScreen: React.FC = () => {
         }
       }
     });
+    AsyncStorage.getItem(TTS_SPEED_STORAGE_KEY).then(saved => {
+      if (saved != null) {
+        const n = parseFloat(saved);
+        if (isFinite(n) && n >= TTS_SPEED_MIN && n <= TTS_SPEED_MAX) setTtsSpeed(n);
+      }
+    });
     AsyncStorage.getItem(WAKE_ACCESS_KEY_STORAGE).then(saved => {
       if (saved) setWakeAccessKey(saved);
     });
@@ -800,6 +811,38 @@ const SettingsScreen: React.FC = () => {
                 <Text style={styles.prerollButtonText}>+0.5</Text>
               </TouchableOpacity>
             </View>
+
+            <Text style={[styles.toggleLabel, {marginTop: 24}]}>Sprechgeschwindigkeit</Text>
+            <Text style={styles.toggleHint}>
+              Wie schnell ARIA spricht. 1.0 = Normal. Niedriger = langsamer, hoeher = schneller.
+              Wird an F5-TTS als speed-Param uebergeben und pro Geraet gespeichert.
+              Default: {TTS_SPEED_DEFAULT.toFixed(1)}x.
+            </Text>
+            <View style={styles.prerollRow}>
+              <TouchableOpacity
+                style={styles.prerollButton}
+                onPress={() => {
+                  const next = Math.max(TTS_SPEED_MIN, Math.round((ttsSpeed - 0.1) * 10) / 10);
+                  setTtsSpeed(next);
+                  AsyncStorage.setItem(TTS_SPEED_STORAGE_KEY, String(next));
+                }}
+                disabled={ttsSpeed <= TTS_SPEED_MIN}
+              >
+                <Text style={styles.prerollButtonText}>−0.1</Text>
+              </TouchableOpacity>
+              <Text style={styles.prerollValue}>{ttsSpeed.toFixed(1)} x</Text>
+              <TouchableOpacity
+                style={styles.prerollButton}
+                onPress={() => {
+                  const next = Math.min(TTS_SPEED_MAX, Math.round((ttsSpeed + 0.1) * 10) / 10);
+                  setTtsSpeed(next);
+                  AsyncStorage.setItem(TTS_SPEED_STORAGE_KEY, String(next));
+                }}
+                disabled={ttsSpeed >= TTS_SPEED_MAX}
+              >
+                <Text style={styles.prerollButtonText}>+0.1</Text>
+              </TouchableOpacity>
+            </View>
           </View>
         )}
 
diff --git a/android/src/services/audio.ts b/android/src/services/audio.ts
index 605f530..be07774 100644
--- a/android/src/services/audio.ts
+++ b/android/src/services/audio.ts
@@ -92,6 +92,24 @@ export const CONV_WINDOW_MIN_SEC = 3.0;
 export const CONV_WINDOW_MAX_SEC = 20.0;
 export const CONV_WINDOW_STORAGE_KEY = 'aria_conv_window_sec';
 
+// TTS-Wiedergabegeschwindigkeit — wird pro Geraet gespeichert und an die
+// Bridge mitgegeben (speed-Param im F5-TTS infer()). 1.0 = normal.
+export const TTS_SPEED_DEFAULT = 1.0;
+export const TTS_SPEED_MIN = 0.5;
+export const TTS_SPEED_MAX = 2.0;
+export const TTS_SPEED_STORAGE_KEY = 'aria_tts_speed';
+
+export async function loadTtsSpeed(): Promise<number> {
+  try {
+    const raw = await AsyncStorage.getItem(TTS_SPEED_STORAGE_KEY);
+    if (raw != null) {
+      const n = parseFloat(raw);
+      if (isFinite(n) && n >= TTS_SPEED_MIN && n <= TTS_SPEED_MAX) return n;
+    }
+  } catch {}
+  return TTS_SPEED_DEFAULT;
+}
+
 export async function loadConvWindowMs(): Promise<number> {
   try {
     const raw = await AsyncStorage.getItem(CONV_WINDOW_STORAGE_KEY);
diff --git a/android/src/services/wakeword.ts b/android/src/services/wakeword.ts
index 886a1fe..fa9f4d7 100644
--- a/android/src/services/wakeword.ts
+++ b/android/src/services/wakeword.ts
@@ -90,12 +90,32 @@ class WakeWordService {
     if (this.initInProgress) return this.initInProgress;
     this.initInProgress = (async () => {
       try {
-        const { PorcupineManager } = require('@picovoice/porcupine-react-native');
-        // Built-In Keyword-Identifier sind lower-case strings im SDK
+        const porcupineRN = require('@picovoice/porcupine-react-native');
+        const { PorcupineManager, BuiltInKeywords } = porcupineRN;
+        // Manche Porcupine-Versionen wollen das BuiltInKeywords-Enum (Objekt
+        // mit keys wie JARVIS, COMPUTER, HEY_GOOGLE), andere akzeptieren
+        // den String direkt. Mappen mit Fallback auf String:
+        const enumKey = this.keyword.toUpperCase().replace(/\s+/g, '_');
+        const kw = (BuiltInKeywords && BuiltInKeywords[enumKey]) || this.keyword;
+        console.log('[WakeWord] Porcupine init: keyword=%s (resolved=%s)',
+                    this.keyword, typeof kw === 'string' ? kw : '[enum]');
         this.porcupine = await PorcupineManager.fromBuiltInKeywords(
           this.accessKey,
-          [this.keyword],
-          (_keywordIndex: number) => this.onWakeDetected(),
+          [kw],
+          (keywordIndex: number) => {
+            console.log('[WakeWord] Porcupine callback fired (index=%d)', keywordIndex);
+            this.onWakeDetected().catch(err =>
+              console.warn('[WakeWord] onWakeDetected crashed:', err));
+          },
+          // Error handler (wenn Porcupine im Background-Thread crashed,
+          // z.B. beim Audio-Engine-Konflikt mit audio-recorder-player)
+          (error: any) => {
+            console.warn('[WakeWord] Porcupine runtime error:', error?.message || error);
+            // Nicht in Loop crashen — state zurueck auf off damit der User
+            // mit dem Aufnahme-Button wieder normal arbeiten kann
+            this.setState('off');
+            this.disposePorcupine().catch(() => {});
+          },
         );
         console.log('[WakeWord] Porcupine init OK (keyword=%s)', this.keyword);
         return true;
diff --git a/bridge/aria_bridge.py b/bridge/aria_bridge.py
index 2a3686e..e824668 100644
--- a/bridge/aria_bridge.py
+++ b/bridge/aria_bridge.py
@@ -541,6 +541,9 @@ class ARIABridge:
         # Wird fuer die direkt folgende ARIA-Antwort genutzt und dann zurueckgesetzt.
         # So kann jedes Geraet seine bevorzugte Stimme bekommen (pro Request).
         self._next_voice_override: Optional[str] = None
+        # Gleiche Logik fuer die Wiedergabegeschwindigkeit (F5-TTS speed-Param,
+        # App-Setting aria_tts_speed, 1.0 = normal).
+        self._next_speed_override: Optional[float] = None
         # STT-Requests die aktuell auf Antwort von der whisper-bridge (Gamebox) warten.
         # requestId → Future mit dem Text (oder None bei Fehler).
         self._pending_stt: dict[str, asyncio.Future] = {}
@@ -911,6 +914,12 @@ class ARIABridge:
             logger.info("[core] Nutze Voice-Override: %s", self._next_voice_override)
             self._next_voice_override = None
 
+        # Speed ebenfalls aus App-Override nehmen (fallback 1.0)
+        xtts_speed = self._next_speed_override or 1.0
+        if self._next_speed_override:
+            logger.info("[core] Nutze Speed-Override: %.2fx", self._next_speed_override)
+            self._next_speed_override = None
+
         tts_text = tts_text_preview or text
         if not tts_text:
             logger.info("[core] TTS-Text leer nach Cleanup — uebersprungen")
@@ -926,6 +935,7 @@ class ARIABridge:
                 "payload": {
                     "text": tts_text,
                     "voice": xtts_voice,
+                    "speed": xtts_speed,
                     "language": "de",
                     "requestId": xtts_request_id,
                     "messageId": message_id,
@@ -1163,6 +1173,13 @@ class ARIABridge:
             if voice_override:
                 self._next_voice_override = voice_override
                 logger.info("[rvs] Voice-Override fuer naechste Antwort: %s", voice_override)
+            # Speed-Override (TTS-Wiedergabegeschwindigkeit, pro Geraet)
+            try:
+                speed = float(payload.get("speed", 0) or 0)
+                if 0.25 <= speed <= 4.0:
+                    self._next_speed_override = speed
+            except (TypeError, ValueError):
+                pass
             if text:
                 logger.info("[rvs] App-Chat: '%s'", text[:80])
                 await self.send_to_core(text, source="app")
@@ -1215,8 +1232,14 @@ class ARIABridge:
             if not text:
                 return
             tts_text = clean_text_for_tts(text) or text
-            # Voice aus App-Payload gewinnt, sonst global
+            # Voice + Speed aus App-Payload gewinnen, sonst global/default
             xtts_voice = payload.get("voice", "") or getattr(self, 'xtts_voice', '')
+            try:
+                xtts_speed = float(payload.get("speed", 0) or 0)
+                if not (0.25 <= xtts_speed <= 4.0):
+                    xtts_speed = 1.0
+            except (TypeError, ValueError):
+                xtts_speed = 1.0
             try:
                 xtts_request_id = str(uuid.uuid4())
                 if message_id:
@@ -1226,6 +1249,7 @@ class ARIABridge:
                     "payload": {
                         "text": tts_text,
                         "voice": xtts_voice,
+                        "speed": xtts_speed,
                         "language": "de",
                         "requestId": xtts_request_id,
                         "messageId": message_id,
@@ -1424,6 +1448,12 @@ class ARIABridge:
             if voice_override:
                 self._next_voice_override = voice_override
                 logger.info("[rvs] Voice-Override (via Audio): %s", voice_override)
+            try:
+                speed = float(payload.get("speed", 0) or 0)
+                if 0.25 <= speed <= 4.0:
+                    self._next_speed_override = speed
+            except (TypeError, ValueError):
+                pass
             logger.info("[rvs] Audio empfangen: %s, %dms, %dKB",
                         mime_type, duration_ms, len(audio_b64) // 1365)
             asyncio.create_task(self._process_app_audio(audio_b64, mime_type))
diff --git a/diagnostic/index.html b/diagnostic/index.html
index 4d2d868..85ff06d 100644
--- a/diagnostic/index.html
+++ b/diagnostic/index.html
@@ -136,6 +136,25 @@
     </div>
   </div>
 
+  <!-- Voice-Preview Modal -->
+  <div id="voice-preview-modal" style="display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,0.7);align-items:center;justify-content:center;">
+    <div style="background:#1A1A2E;border:1px solid #2A2A3E;border-radius:10px;padding:20px;max-width:560px;width:90%;display:flex;flex-direction:column;gap:12px;">
+      <div style="display:flex;align-items:center;justify-content:space-between;">
+        <h3 style="margin:0;color:#fff;">Stimmen-Preview: <span id="voice-preview-name">—</span></h3>
+        <button onclick="closeVoicePreview()" style="background:none;border:none;color:#8888AA;font-size:22px;cursor:pointer;">&times;</button>
+      </div>
+      <textarea id="voice-preview-text" rows="4"
+        style="background:#0D0D1A;border:1px solid #2A2A3E;border-radius:6px;padding:10px;color:#fff;font-size:13px;resize:vertical;"></textarea>
+      <div style="display:flex;gap:8px;align-items:center;">
+        <button id="voice-preview-play" onclick="playVoicePreview()" class="btn primary" style="padding:8px 16px;">
+          ▶ Abspielen
+        </button>
+        <span id="voice-preview-status" style="color:#8888AA;font-size:11px;flex:1;"></span>
+      </div>
+      <audio id="voice-preview-audio" controls style="width:100%;display:none;"></audio>
+    </div>
+  </div>
+
   <!-- Disk-Space Warnung (dynamisch gesetzt) -->
   <div id="disk-banner" style="display:none;position:sticky;top:0;z-index:500;padding:10px 14px;border-radius:0;margin:-16px -16px 12px -16px;font-size:13px;">
     <div style="display:flex;align-items:center;gap:10px;flex-wrap:wrap;">
@@ -930,6 +949,24 @@
           return;
         }
 
+        if (msg.type === 'voice_preview_audio') {
+          const statusEl = document.getElementById('voice-preview-status');
+          const audio = document.getElementById('voice-preview-audio');
+          const playBtn = document.getElementById('voice-preview-play');
+          if (playBtn) playBtn.disabled = false;
+          if (msg.error) {
+            if (statusEl) statusEl.textContent = '❌ Fehler: ' + msg.error;
+            return;
+          }
+          if (msg.base64 && audio) {
+            audio.src = 'data:audio/wav;base64,' + msg.base64;
+            audio.style.display = 'block';
+            audio.play().catch(() => {});
+            if (statusEl) statusEl.textContent = '✅ fertig';
+          }
+          return;
+        }
+
         if (msg.type === 'voice_ready') {
           const v = msg.payload?.voice || '';
           const err = msg.payload?.error;
@@ -1579,16 +1616,51 @@
       html += '<div style="display:flex;flex-direction:column;gap:4px;">';
       for (const v of voices) {
         const esc = (s) => String(s).replace(/[&<>"']/g, c => ({ "&":"&amp;", "<":"&lt;", ">":"&gt;", '"':"&quot;", "'":"&#39;" }[c]));
+        const jsName = esc(v.name).replace(/'/g, "\\'");
         html += `<div style="display:flex;align-items:center;gap:8px;background:#1E1E2E;border-radius:4px;padding:4px 8px;font-size:12px;">`
               + `<span style="flex:1;color:#E0E0F0;">${esc(v.name)}</span>`
               + `<span style="color:#555570;font-size:10px;">${(v.size/1024).toFixed(0)}KB</span>`
-              + `<button class="btn secondary" onclick="deleteXttsVoice('${esc(v.name).replace(/'/g, "\\'")}')" style="padding:2px 8px;font-size:10px;color:#FF6B6B;" title="Stimme loeschen">X</button>`
+              + `<button class="btn secondary" onclick="openVoicePreview('${jsName}')" style="padding:2px 8px;font-size:12px;" title="Stimme anhoeren">▶</button>`
+              + `<button class="btn secondary" onclick="deleteXttsVoice('${jsName}')" style="padding:2px 8px;font-size:10px;color:#FF6B6B;" title="Stimme loeschen">X</button>`
               + `</div>`;
       }
       html += '</div>';
       box.innerHTML = html;
     }
 
+    // ── Voice Preview Modal ─────────────────────────
+    const VOICE_PREVIEW_DEFAULT = 'Hallo, ich bin ARIA. Das hier ist ein kleiner Test damit du meine Stimme beurteilen kannst.';
+    let currentPreviewVoice = '';
+
+    function openVoicePreview(name) {
+      currentPreviewVoice = name;
+      document.getElementById('voice-preview-name').textContent = name;
+      // Text bei jedem Oeffnen zuruecksetzen
+      document.getElementById('voice-preview-text').value = VOICE_PREVIEW_DEFAULT;
+      document.getElementById('voice-preview-status').textContent = '';
+      const audio = document.getElementById('voice-preview-audio');
+      audio.style.display = 'none';
+      audio.src = '';
+      document.getElementById('voice-preview-modal').style.display = 'flex';
+    }
+
+    function closeVoicePreview() {
+      document.getElementById('voice-preview-modal').style.display = 'none';
+      const audio = document.getElementById('voice-preview-audio');
+      try { audio.pause(); } catch {}
+    }
+
+    function playVoicePreview() {
+      const text = (document.getElementById('voice-preview-text').value || '').trim();
+      if (!text) {
+        document.getElementById('voice-preview-status').textContent = 'Text leer';
+        return;
+      }
+      document.getElementById('voice-preview-status').textContent = '⏳ Rendere...';
+      document.getElementById('voice-preview-play').disabled = true;
+      send({ action: 'preview_voice', voice: currentPreviewVoice, text });
+    }
+
     function deleteXttsVoice(name) {
       if (!confirm(`Stimme "${name}" endgueltig loeschen?`)) return;
       send({ action: 'xtts_delete_voice', name });
diff --git a/diagnostic/server.js b/diagnostic/server.js
index c3935a3..06f6b44 100644
--- a/diagnostic/server.js
+++ b/diagnostic/server.js
@@ -653,6 +653,9 @@ function connectRVS(forcePlain) {
           log("info", "rvs", `service_status ${svc} ${state}${model ? ` (${model})` : ""}`);
         }
         broadcast({ type: "service_status", payload: msg.payload });
+      } else if (msg.type === "audio_pcm" && msg.payload && _previewPending.size > 0) {
+        // PCM-Chunks einer laufenden Voice-Preview — sammeln + WAV bauen
+        _handlePreviewChunk(msg.payload);
       } else {
         log("debug", "rvs", `Nachricht: ${JSON.stringify(msg).slice(0, 150)}`);
       }
@@ -1465,6 +1468,8 @@ wss.on("connection", (ws) => {
         handleSaveTriggers(ws, msg.triggers || []);
       } else if (msg.action === "test_tts") {
         handleTestTTS(ws, msg.text || "Test");
+      } else if (msg.action === "preview_voice") {
+        handleVoicePreview(ws, msg.voice || "", msg.text || "Hallo.");
       } else if (msg.action === "check_tts") {
         handleCheckTTS(ws);
       } else if (msg.action === "check_desktop") {
@@ -1637,6 +1642,95 @@ async function handleSaveTriggers(clientWs, triggers) {
 }
 
 // ── TTS Diagnose (XTTS) ───────────────────────────────
+// ── Voice Preview ────────────────────────────────────────
+// Sammelt audio_pcm Chunks einer Preview-Anfrage, baut am Ende eine WAV
+// und schickt sie base64-kodiert an den Browser-Client.
+//
+// Map requestId → { clientWs, chunks: [Buffer], sampleRate, channels }
+const _previewPending = new Map();
+
+function _buildWavFromPcm(pcmBuf, sampleRate, channels) {
+  const bitsPerSample = 16;
+  const byteRate = sampleRate * channels * bitsPerSample / 8;
+  const blockAlign = channels * bitsPerSample / 8;
+  const dataSize = pcmBuf.length;
+  const header = Buffer.alloc(44);
+  header.write("RIFF", 0);
+  header.writeUInt32LE(36 + dataSize, 4);
+  header.write("WAVE", 8);
+  header.write("fmt ", 12);
+  header.writeUInt32LE(16, 16);            // subchunk1 size
+  header.writeUInt16LE(1, 20);             // PCM
+  header.writeUInt16LE(channels, 22);
+  header.writeUInt32LE(sampleRate, 24);
+  header.writeUInt32LE(byteRate, 28);
+  header.writeUInt16LE(blockAlign, 32);
+  header.writeUInt16LE(bitsPerSample, 34);
+  header.write("data", 36);
+  header.writeUInt32LE(dataSize, 40);
+  return Buffer.concat([header, pcmBuf]);
+}
+
+function _handlePreviewChunk(payload) {
+  const reqId = payload?.requestId || "";
+  const entry = _previewPending.get(reqId);
+  if (!entry) return;
+  if (payload.base64) {
+    try { entry.chunks.push(Buffer.from(payload.base64, "base64")); } catch {}
+  }
+  if (!entry.sampleRate && payload.sampleRate) entry.sampleRate = payload.sampleRate;
+  if (!entry.channels && payload.channels) entry.channels = payload.channels;
+  if (payload.final) {
+    _previewPending.delete(reqId);
+    try {
+      const pcm = Buffer.concat(entry.chunks);
+      const wav = _buildWavFromPcm(pcm, entry.sampleRate || 24000, entry.channels || 1);
+      const b64 = wav.toString("base64");
+      if (entry.clientWs && entry.clientWs.readyState === 1) {
+        entry.clientWs.send(JSON.stringify({
+          type: "voice_preview_audio",
+          base64: b64,
+          size: wav.length,
+        }));
+      }
+    } catch (err) {
+      if (entry.clientWs && entry.clientWs.readyState === 1) {
+        entry.clientWs.send(JSON.stringify({
+          type: "voice_preview_audio",
+          error: err.message,
+        }));
+      }
+    }
+  }
+}
+
+async function handleVoicePreview(clientWs, voice, text) {
+  try {
+    const requestId = crypto.randomUUID();
+    _previewPending.set(requestId, { clientWs, chunks: [], sampleRate: 0, channels: 0 });
+    // Timeout safety net
+    setTimeout(() => {
+      if (_previewPending.has(requestId)) {
+        _previewPending.delete(requestId);
+        if (clientWs && clientWs.readyState === 1) {
+          clientWs.send(JSON.stringify({
+            type: "voice_preview_audio",
+            error: "Timeout (60s) — keine Antwort vom f5tts-bridge",
+          }));
+        }
+      }
+    }, 60000);
+    log("info", "server", `Voice-Preview: voice="${voice}" text="${text.slice(0, 60)}"`);
+    sendToRVS_raw({
+      type: "xtts_request",
+      payload: { text, language: "de", requestId, voice, speed: 1.0 },
+      timestamp: Date.now(),
+    });
+  } catch (err) {
+    clientWs.send(JSON.stringify({ type: "voice_preview_audio", error: err.message }));
+  }
+}
+
 async function handleTestTTS(clientWs, text) {
   try {
     log("info", "server", `TTS-Test via XTTS: "${text}"`);
diff --git a/issue.md b/issue.md
index 8b69eda..27a25de 100644
--- a/issue.md
+++ b/issue.md
@@ -75,16 +75,31 @@
 
 ### Bugs
 - [ ] NO_REPLY wird als "NO" im Chat angezeigt — sollte still verworfen werden (Token nicht gesaeubert)
+- [ ] App: Auto-Playback der ARIA-Antwort greift nicht immer nach Erhalt — Play-Button funktioniert aber manuell
+- [ ] App: Deaktivierter Mund-Button (Mute) — trotzdem kommt manchmal Sprachausgabe durch
+- [ ] App: Wake-Word "jarvis" triggert nicht (Porcupine-Build mit Jarvis-Keyword haekelt)
+- [ ] App: Nach Deaktivieren vom Ohr-Button funktioniert der Aufnahme-Button nicht mehr
+- [ ] App: Stuerzt beim Lauschen ab, eventuell bei Nebengeraeuschen (Porcupine-Segfault-Verdacht)
 
 ### App Features
-- [ ] Wake Word on-device (Porcupine "ARIA" Keyword, Phase 2 — passives Lauschen)
 - [ ] Chat-History zuverlaessiger laden (AsyncStorage Race Condition)
 - [ ] Background Audio Service (TTS auch bei minimierter App)
+- [ ] Text-Auswahl in Chat-Nachrichten (Kopieren von ARIA-Antworten)
+- [ ] Autolink: Telefonnummern → Telefon-Icon → Android-Dialer
+- [ ] Autolink: HTTP(S)-URLs → anklickbar, oeffnet im Browser
+- [ ] Autolink: E-Mail-Adressen → anklickbar, oeffnet Mail-App
+- [ ] TTS-Wiedergabegeschwindigkeit pro Geraet einstellbar (0.1-Schritte, Default 1.0)
+
+### Diagnostic Features
+- [ ] Voice-Preview-Button in der Stimmen-Liste (Play-Icon vor dem Loeschen-X):
+      oeffnet Modal mit Textfeld (Default-Beispieltext wird jedesmal neu gesetzt)
+      und Play-Button → Stimme rendert den Text und spielt im Browser ab
 
 ### TTS / Audio
 - [ ] Audio-Normalisierung (Lautstaerke zwischen Saetzen/Chunks angleichen)
 - [ ] F5-TTS: Streaming-Inferenz testen (nativ statt satzweise) wenn ein passendes Backend kommt
 - [ ] F5-TTS: Optional Deepspeed-Beschleunigung pruefen
+- [ ] F5-TTS: BigVGAN-Vocoder-Support in Bridge (aktuell nur Vocos)
 
 ### Architektur
 - [ ] Bilder: Claude Vision direkt nutzen (aktuell nur Dateipfad an ARIA)
diff --git a/xtts/f5tts/bridge.py b/xtts/f5tts/bridge.py
index f9e1ae1..5677da2 100644
--- a/xtts/f5tts/bridge.py
+++ b/xtts/f5tts/bridge.py
@@ -237,7 +237,8 @@ class F5Runner:
         else:
             logger.info("F5-TTS Live-Config: cfg_strength=%.2f nfe=%d", new_cfg, new_nfe)
 
-    def _infer_blocking(self, gen_text: str, ref_wav: str, ref_text: str) -> tuple[np.ndarray, int]:
+    def _infer_blocking(self, gen_text: str, ref_wav: str, ref_text: str,
+                        speed: float = 1.0) -> tuple[np.ndarray, int]:
         wav, sr, _ = self.model.infer(
             ref_file=ref_wav,
             ref_text=ref_text,
@@ -246,6 +247,7 @@ class F5Runner:
             seed=-1,
             cfg_strength=self.cfg_strength,
             nfe_step=self.nfe_step,
+            speed=speed,
         )
         # F5-TTS gibt float32 1D-Array — auf 24kHz sample-rate standard
         if not isinstance(wav, np.ndarray):
@@ -254,10 +256,11 @@ class F5Runner:
             wav = wav.squeeze()
         return wav.astype(np.float32), int(sr)
 
-    async def synthesize(self, gen_text: str, ref_wav: str, ref_text: str) -> tuple[np.ndarray, int]:
+    async def synthesize(self, gen_text: str, ref_wav: str, ref_text: str,
+                         speed: float = 1.0) -> tuple[np.ndarray, int]:
         await self.ensure_loaded()
         loop = asyncio.get_event_loop()
-        return await loop.run_in_executor(None, self._infer_blocking, gen_text, ref_wav, ref_text)
+        return await loop.run_in_executor(None, self._infer_blocking, gen_text, ref_wav, ref_text, speed)
 
 
 # ── Helpers ─────────────────────────────────────────────────
@@ -421,9 +424,9 @@ _tts_queue: asyncio.Queue[tuple] = asyncio.Queue()
 async def _tts_worker(ws, runner: F5Runner) -> None:
     """Serialisiert Synthesen — GPU kann sonst OOM gehen."""
     while True:
-        text, voice, request_id, message_id, language = await _tts_queue.get()
+        text, voice, request_id, message_id, language, speed = await _tts_queue.get()
         try:
-            await _do_tts(ws, runner, text, voice, request_id, message_id, language)
+            await _do_tts(ws, runner, text, voice, request_id, message_id, language, speed)
         except Exception:
             logger.exception("TTS-Worker Fehler")
         finally:
@@ -431,7 +434,8 @@ async def _tts_worker(ws, runner: F5Runner) -> None:
 
 
 async def _do_tts(ws, runner: F5Runner, text: str, voice: str,
-                  request_id: str, message_id: str, language: str) -> None:
+                  request_id: str, message_id: str, language: str,
+                  speed: float = 1.0) -> None:
     t0 = time.time()
     ref_wav_path, ref_txt_path = voice_paths(voice) if voice else (None, None)
 
@@ -509,7 +513,7 @@ async def _do_tts(ws, runner: F5Runner, text: str, voice: str,
     pcm_sr = TARGET_SR
     for i, sent in enumerate(sentences):
         try:
-            wav, sr = await runner.synthesize(sent, ref_wav_str, ref_text)
+            wav, sr = await runner.synthesize(sent, ref_wav_str, ref_text, speed)
             pcm_sr = sr
             pcm_bytes = float_to_pcm16(wav)
             # Erste PCM-Chunk des allerersten Satzes bekommt Fade-In (maskiert
@@ -754,12 +758,19 @@ async def run_loop(runner: F5Runner) -> None:
                         payload = msg.get("payload", {}) or {}
 
                         if mtype == "xtts_request":
+                            try:
+                                speed = float(payload.get("speed") or 1.0)
+                            except (TypeError, ValueError):
+                                speed = 1.0
+                            if not (0.25 <= speed <= 4.0):
+                                speed = 1.0
                             await _tts_queue.put((
                                 payload.get("text", ""),
                                 payload.get("voice", "") or "",
                                 payload.get("requestId", ""),
                                 payload.get("messageId", ""),
                                 payload.get("language", "de"),
+                                speed,
                             ))
                         elif mtype == "voice_upload":
                             asyncio.create_task(handle_voice_upload(ws, payload))