diff --git a/public/audio/respiratory/normal-vesicular.ogg b/public/audio/respiratory/normal-vesicular.ogg
new file mode 100644
index 0000000..e8b044f
Binary files /dev/null and b/public/audio/respiratory/normal-vesicular.ogg differ
diff --git a/public/audio/respiratory/pleural-rub.ogg b/public/audio/respiratory/pleural-rub.ogg
new file mode 100644
index 0000000..64ada22
Binary files /dev/null and b/public/audio/respiratory/pleural-rub.ogg differ
diff --git a/public/audio/respiratory/rhonchi.ogg b/public/audio/respiratory/rhonchi.ogg
new file mode 100644
index 0000000..8f4af59
Binary files /dev/null and b/public/audio/respiratory/rhonchi.ogg differ
diff --git a/public/index.html b/public/index.html
index d716dc7..fa46a96 100644
--- a/public/index.html
+++ b/public/index.html
@@ -447,7 +447,6 @@
   <script defer src="/js/chartReview.js"></script>
   <script defer src="/js/soap.js"></script>
   <script defer src="/js/milestones.js"></script>
-  <script defer src="/js/respiratorySounds.js"></script>
   <script defer src="/js/peGuide.js"></script>
   <script defer src="/js/extensions.js"></script>
   <script defer src="/js/nextcloud.js"></script>
diff --git a/public/js/peGuide.js b/public/js/peGuide.js
index 2155e9b..e3346a7 100644
--- a/public/js/peGuide.js
+++ b/public/js/peGuide.js
@@ -247,11 +247,10 @@
   // ────────────────────────────────────────────────────────────
   // RESPIRATORY SOUNDS LIBRARY
   // ────────────────────────────────────────────────────────────
-  // Each entry maps to a key in window.RespSounds (respiratorySounds.js).
   // Displayed as a dedicated card at the top of the Respiratory system.
-  // src = real recording path; if absent, the player falls back to synthesis
+  // src = real recording path served from /public/audio/respiratory/.
   var RESP_SOUNDS = [
-    { key: 'normal',         src: null,                                 title: 'Normal vesicular breath sounds',
+    { key: 'normal',         src: '/audio/respiratory/normal-vesicular.ogg', title: 'Normal vesicular breath sounds',
       where: 'Peripheral lung fields',
       features: 'Soft, rustling. Inspiration louder and longer than expiration.',
       clinical: 'Baseline — deviation elsewhere is what you listen for.' },
@@ -271,18 +270,14 @@
       where: 'Lower lobes; either side',
       features: 'Discontinuous, longer and louder than fine crackles. Lower-pitched. Can be early or late inspiratory; often clear partly with cough.',
       clinical: 'Secretions in larger airways — bronchitis, later pneumonia, bronchiectasis, aspiration.' },
-    { key: 'rhonchi',        src: null,                                 title: 'Rhonchi',
+    { key: 'rhonchi',        src: '/audio/respiratory/rhonchi.ogg',    title: 'Rhonchi',
       where: 'Central or anywhere with airway secretions',
       features: 'Continuous, low-pitched, snore-like. Typically expiratory. Clear or change with cough.',
       clinical: 'Large-airway secretions — bronchitis, pneumonia with large-airway involvement, cystic fibrosis, bronchiectasis.' },
-    { key: 'pleuralrub',     src: null,                                 title: 'Pleural friction rub',
+    { key: 'pleuralrub',     src: '/audio/respiratory/pleural-rub.ogg', title: 'Pleural friction rub',
       where: 'Focal, often lateral or posterior lower chest',
       features: 'Grating, creaky — "leather on leather". Biphasic (heard in inspiration and expiration). Does NOT clear with cough.',
-      clinical: 'Pleural inflammation — pleuritis, pulmonary embolism, pneumonia with pleural involvement, viral pleurisy.' },
-    { key: 'grunting',       src: null,                                 title: 'Expiratory grunting',
-      where: 'Audible without stethoscope in infants',
-      features: 'Short, low-pitched sound at the end of each expiration. Physiologic PEEP against a partially closed glottis.',
-      clinical: 'Sign of significant respiratory distress in an infant — RDS, pneumonia, sepsis, congenital heart disease with heart failure.' }
+      clinical: 'Pleural inflammation — pleuritis, pulmonary embolism, pneumonia with pleural involvement, viral pleurisy.' }
   ];
 
   // ────────────────────────────────────────────────────────────
@@ -1252,7 +1247,7 @@
               { label: 'Listen for rhonchi', method: 'Low-pitched, continuous, snore-like. Often change with cough. Use the "Rhonchi" sample.', normal: 'No rhonchi' },
               { label: 'Listen for pleural rub', method: 'Grating, creaky, biphasic, does NOT clear with cough. Use the "Pleural rub" sample.', normal: 'No pleural rub' },
               { label: 'Listen at the neck (for stridor)', method: 'Place stethoscope over the anterior neck. Stridor is loudest here and differentiates from wheeze (loudest over chest). Use the "Stridor" sample.', normal: 'No stridor' },
-              { label: 'Listen for expiratory grunting (infants)', method: 'Often audible without a stethoscope at the bedside. Use the "Grunting" sample.', normal: 'No grunting' },
+              { label: 'Listen for expiratory grunting (infants)', method: 'Often audible without a stethoscope at the bedside — short, low-pitched sound at the end of each expiration (glottal closure against exhaled air).', normal: 'No grunting' },
               { label: 'Cough re-listen', method: 'Have patient cough forcefully; re-listen to any abnormal area. Note if the sound clears or changes.', normal: 'Any secretion-based sound should clear or change with cough' }
             ],
             abnormalHints: ['Wheeze — asthma, bronchiolitis, foreign body (localised), anaphylaxis', 'Fine crackles — pulmonary edema, interstitial lung disease, early pneumonia', 'Coarse crackles — bronchitis, pneumonia, bronchiectasis, aspiration', 'Rhonchi — large-airway secretions', 'Pleural rub — pleurisy, PE, pneumonia with pleural involvement', 'Stridor — upper airway obstruction (croup, epiglottitis, FB)'] },
@@ -1398,16 +1393,7 @@
   // free on all platforms incl. mobile). Falls back to a synth play button
   // when the sound has no real recording.
   function renderSoundCard(s) {
-    var isReal = !!s.src;
-    var player = isReal
-      ? '<audio class="pe-audio" controls preload="none" src="' + esc(s.src) + '" style="width:100%;height:36px;"></audio>'
-      : '<div class="synth-sound" data-synth-key="' + esc(s.key) + '" style="display:flex;align-items:center;gap:8px;">' +
-          '<button type="button" class="btn-sm btn-primary synth-play-btn" title="Play ~3 s sample" style="padding:6px 10px;min-width:80px;"><i class="fas fa-play"></i> Play</button>' +
-          '<button type="button" class="btn-sm btn-ghost synth-stop-btn" title="Stop" style="padding:6px 10px;display:none;"><i class="fas fa-stop"></i></button>' +
-          '<div class="synth-progress" style="flex:1;height:6px;background:var(--g200);border-radius:3px;overflow:hidden;">' +
-            '<div class="synth-progress-bar" style="height:100%;width:0%;background:#0ea5e9;transition:width 50ms linear;"></div>' +
-          '</div>' +
-        '</div>';
+    var player = '<audio class="pe-audio" controls preload="none" src="' + esc(s.src) + '" style="width:100%;height:36px;"></audio>';
     var html = '';
     html += '<div style="border:1px solid var(--g200);border-radius:8px;padding:10px;background:#fff;">';
     html += '  <div style="font-weight:600;font-size:13px;color:var(--g800);margin-bottom:4px;">' + esc(s.title) + '</div>';
@@ -1612,64 +1598,12 @@
         if (state[key]) state[key].note = inp.value;
       });
     });
-    // ── Single-playback policy: only one sound at a time across the whole
-    // ── page. When any <audio> starts playing, pause every other <audio>
-    // ── and stop any synth sound. When any synth starts, pause all <audio>.
-    function stopAllExcept(exception) {
-      content.querySelectorAll('.pe-audio').forEach(function (a) {
-        if (a !== exception && !a.paused) { a.pause(); }
-      });
-      if (exception !== 'synth' && window.RespSounds && window.RespSounds.stop) {
-        window.RespSounds.stop();
-      }
-      // Reset all synth progress bars
-      content.querySelectorAll('.synth-sound').forEach(function (c) {
-        if (c !== exception) {
-          var pb = c.querySelector('.synth-play-btn'); if (pb) { pb.innerHTML = '<i class="fas fa-play"></i> Play'; pb.style.display = ''; }
-          var sb = c.querySelector('.synth-stop-btn'); if (sb) sb.style.display = 'none';
-          var bar = c.querySelector('.synth-progress-bar'); if (bar) bar.style.width = '0%';
-        }
-      });
-    }
+    // Single-playback policy: when any <audio> starts, pause every other one.
     content.querySelectorAll('.pe-audio').forEach(function (a) {
-      a.addEventListener('play', function () { stopAllExcept(a); });
-    });
-
-    // Synth sound play/stop with progress bar
-    content.querySelectorAll('.synth-sound').forEach(function (container) {
-      var key = container.dataset.synthKey;
-      var playBtn = container.querySelector('.synth-play-btn');
-      var stopBtn = container.querySelector('.synth-stop-btn');
-      var bar = container.querySelector('.synth-progress-bar');
-      var timer = null;
-      var startTime = 0;
-      var durationMs = 3200;   // synth sounds are all ~3 s
-      function finish() {
-        if (timer) { clearInterval(timer); timer = null; }
-        playBtn.innerHTML = '<i class="fas fa-play"></i> Play';
-        playBtn.style.display = '';
-        stopBtn.style.display = 'none';
-        bar.style.width = '0%';
-      }
-      playBtn.addEventListener('click', function () {
-        if (!window.RespSounds || !window.RespSounds.play) { showToast('Audio library not loaded', 'error'); return; }
-        // Stop every other playing sound (audio + other synth) first
-        stopAllExcept(container);
-        var ok = window.RespSounds.play(key);
-        if (!ok) { showToast('Audio not available', 'error'); return; }
-        playBtn.style.display = 'none';
-        stopBtn.style.display = '';
-        startTime = Date.now();
-        bar.style.width = '0%';
-        timer = setInterval(function () {
-          var pct = Math.min(100, ((Date.now() - startTime) / durationMs) * 100);
-          bar.style.width = pct + '%';
-          if (pct >= 100) finish();
-        }, 50);
-      });
-      stopBtn.addEventListener('click', function () {
-        if (window.RespSounds && window.RespSounds.stop) window.RespSounds.stop();
-        finish();
+      a.addEventListener('play', function () {
+        content.querySelectorAll('.pe-audio').forEach(function (other) {
+          if (other !== a && !other.paused) other.pause();
+        });
       });
     });
   }
diff --git a/public/js/respiratorySounds.js b/public/js/respiratorySounds.js
deleted file mode 100644
index e7ba1e8..0000000
--- a/public/js/respiratorySounds.js
+++ /dev/null
@@ -1,332 +0,0 @@
-// ============================================================
-// RESPIRATORY SOUND SYNTHESIZER
-// ============================================================
-// Synthesises the characteristic *pattern* of each classic respiratory
-// sound via the Web Audio API. These are NOT clinical recordings —
-// they approximate the acoustic signature so a learner can internalise
-// the difference (e.g. wheeze vs stridor vs crackles vs rhonchi). For
-// diagnostic use, always rely on real recordings and bedside teaching.
-//
-// Exposes window.RespSounds.play(name) — name ∈ {
-//   'normal', 'wheeze', 'stridor', 'finecrackles', 'coarsecrackles',
-//   'rhonchi', 'pleuralrub', 'grunting'
-// }
-//
-// All sounds take ~3–4 seconds and auto-stop. One playback at a time.
-// ============================================================
-
-(function () {
-  var _ctx = null;
-  var _currentStop = null;   // cleanup function for any in-flight sound
-
-  function ctx() {
-    if (_ctx) return _ctx;
-    var AC = window.AudioContext || window.webkitAudioContext;
-    if (!AC) return null;
-    _ctx = new AC();
-    return _ctx;
-  }
-
-  function stopCurrent() {
-    if (_currentStop) { try { _currentStop(); } catch (e) {} _currentStop = null; }
-  }
-
-  // Utility: create a gain node with an AD envelope (attack, decay to 0)
-  function envelope(ac, peak, t0, attack, hold, decay) {
-    var g = ac.createGain();
-    g.gain.setValueAtTime(0, t0);
-    g.gain.linearRampToValueAtTime(peak, t0 + attack);
-    g.gain.setValueAtTime(peak, t0 + attack + hold);
-    g.gain.linearRampToValueAtTime(0, t0 + attack + hold + decay);
-    return g;
-  }
-
-  // Pink-ish noise buffer generator
-  function noiseBuffer(ac, durationSec) {
-    var sr = ac.sampleRate;
-    var buf = ac.createBuffer(1, Math.floor(sr * durationSec), sr);
-    var data = buf.getChannelData(0);
-    // simple 1-pole lowpass of white noise → pinkish / breath-like
-    var last = 0;
-    for (var i = 0; i < data.length; i++) {
-      var w = Math.random() * 2 - 1;
-      last = 0.7 * last + 0.3 * w;
-      data[i] = last * 0.5;
-    }
-    return buf;
-  }
-
-  // ─── Normal vesicular breath ───────────────────────────
-  // Soft, inspiration-dominant pink noise with a gentle expiratory fade.
-  function playNormal() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-    var cycle = 2.8;                 // one full respiratory cycle
-    var src = ac.createBufferSource();
-    src.buffer = noiseBuffer(ac, cycle * 2 + 0.5);
-    var lp = ac.createBiquadFilter(); lp.type = 'lowpass'; lp.frequency.value = 900;
-    var g = ac.createGain();
-    g.gain.setValueAtTime(0, now);
-    // Inspiration: rise 1.2s, hold, fall
-    g.gain.linearRampToValueAtTime(0.18, now + 0.6);
-    g.gain.linearRampToValueAtTime(0.05, now + 1.4);
-    // Expiration: soft, shorter, quieter
-    g.gain.linearRampToValueAtTime(0.08, now + 1.9);
-    g.gain.linearRampToValueAtTime(0.02, now + 2.6);
-    g.gain.linearRampToValueAtTime(0,    now + cycle);
-    src.connect(lp).connect(g).connect(ac.destination);
-    src.start(now);
-    src.stop(now + cycle + 0.1);
-    _currentStop = function () { try { src.stop(); } catch (e) {} };
-  }
-
-  // ─── Wheeze — continuous high-pitched, expiratory dominant ───
-  // Model: two sine partials (400 & 700 Hz) with slight vibrato, amplitude
-  // shaped by a long expiratory envelope.
-  function playWheeze() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-    var dur = 3.2;
-
-    // Brief quiet inspiration
-    var insp = ac.createBufferSource();
-    insp.buffer = noiseBuffer(ac, 1.0);
-    var insg = ac.createGain();
-    insg.gain.setValueAtTime(0, now);
-    insg.gain.linearRampToValueAtTime(0.04, now + 0.3);
-    insg.gain.linearRampToValueAtTime(0, now + 0.8);
-    insp.connect(insg).connect(ac.destination);
-    insp.start(now);
-
-    // Expiratory wheeze — two slightly modulated sines
-    var expStart = now + 0.9;
-    var expEnd = expStart + 2.0;
-
-    function partial(freq, gainLvl) {
-      var o = ac.createOscillator();
-      o.type = 'sine';
-      o.frequency.setValueAtTime(freq, expStart);
-      // subtle vibrato
-      var lfo = ac.createOscillator(); lfo.frequency.value = 5;
-      var lfoGain = ac.createGain(); lfoGain.gain.value = freq * 0.02;
-      lfo.connect(lfoGain).connect(o.frequency);
-      var g = ac.createGain();
-      g.gain.setValueAtTime(0, expStart);
-      g.gain.linearRampToValueAtTime(gainLvl, expStart + 0.3);
-      g.gain.linearRampToValueAtTime(gainLvl * 0.7, expEnd - 0.4);
-      g.gain.linearRampToValueAtTime(0, expEnd);
-      o.connect(g).connect(ac.destination);
-      o.start(expStart); lfo.start(expStart);
-      o.stop(expEnd + 0.1); lfo.stop(expEnd + 0.1);
-      return { o: o, lfo: lfo };
-    }
-    var p1 = partial(440, 0.12);
-    var p2 = partial(780, 0.08);
-    _currentStop = function () { try { p1.o.stop(); p1.lfo.stop(); p2.o.stop(); p2.lfo.stop(); insp.stop(); } catch (e) {} };
-  }
-
-  // ─── Stridor — inspiratory high-pitched monophonic ────────
-  function playStridor() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-    var inspStart = now + 0.1, inspEnd = inspStart + 1.6;
-
-    var o = ac.createOscillator();
-    o.type = 'sawtooth';
-    o.frequency.setValueAtTime(600, inspStart);
-    o.frequency.linearRampToValueAtTime(850, inspStart + 0.8);
-    o.frequency.linearRampToValueAtTime(700, inspEnd);
-    var bp = ac.createBiquadFilter(); bp.type = 'bandpass'; bp.frequency.value = 800; bp.Q.value = 4;
-    var g = ac.createGain();
-    g.gain.setValueAtTime(0, inspStart);
-    g.gain.linearRampToValueAtTime(0.10, inspStart + 0.4);
-    g.gain.linearRampToValueAtTime(0.08, inspEnd - 0.3);
-    g.gain.linearRampToValueAtTime(0, inspEnd);
-    o.connect(bp).connect(g).connect(ac.destination);
-    o.start(inspStart);
-    o.stop(inspEnd + 0.1);
-
-    // Quiet expiration
-    var expSrc = ac.createBufferSource();
-    expSrc.buffer = noiseBuffer(ac, 1.0);
-    var eg = ac.createGain();
-    eg.gain.setValueAtTime(0, inspEnd);
-    eg.gain.linearRampToValueAtTime(0.04, inspEnd + 0.3);
-    eg.gain.linearRampToValueAtTime(0, inspEnd + 1.0);
-    expSrc.connect(eg).connect(ac.destination);
-    expSrc.start(inspEnd);
-    _currentStop = function () { try { o.stop(); expSrc.stop(); } catch (e) {} };
-  }
-
-  // ─── Fine crackles — end-inspiratory short high-freq pops ───
-  function playFineCrackles() { _playCrackles(15, 0.008, 3500, 0.06); }
-  // ─── Coarse crackles — fewer, longer, lower-freq bursts ────
-  function playCoarseCrackles() { _playCrackles(8, 0.025, 1400, 0.10); }
-
-  function _playCrackles(count, burstDur, freq, peak) {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-    // Underlying quiet vesicular breath
-    var base = ac.createBufferSource();
-    base.buffer = noiseBuffer(ac, 3.0);
-    var bg = ac.createGain(); bg.gain.setValueAtTime(0.03, now); bg.gain.linearRampToValueAtTime(0, now + 3.0);
-    var lp = ac.createBiquadFilter(); lp.type = 'lowpass'; lp.frequency.value = 700;
-    base.connect(lp).connect(bg).connect(ac.destination);
-    base.start(now);
-
-    // Crackles clustered in late inspiration (~1.2–1.8s)
-    var cracks = [];
-    for (var i = 0; i < count; i++) {
-      var t = now + 1.2 + (Math.random() * 0.6);   // late inspiration
-      var s = ac.createBufferSource();
-      s.buffer = noiseBuffer(ac, burstDur + 0.02);
-      var bp = ac.createBiquadFilter(); bp.type = 'bandpass'; bp.frequency.value = freq; bp.Q.value = 6;
-      var g = ac.createGain();
-      g.gain.setValueAtTime(0, t);
-      g.gain.linearRampToValueAtTime(peak, t + 0.003);
-      g.gain.linearRampToValueAtTime(0, t + burstDur);
-      s.connect(bp).connect(g).connect(ac.destination);
-      s.start(t); s.stop(t + burstDur + 0.02);
-      cracks.push(s);
-    }
-    _currentStop = function () { try { base.stop(); cracks.forEach(function (s) { s.stop(); }); } catch (e) {} };
-  }
-
-  // ─── Rhonchi — low-pitched continuous snore-like ──────────
-  function playRhonchi() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-    var t0 = now + 0.3, t1 = t0 + 2.2;
-
-    var o = ac.createOscillator();
-    o.type = 'sawtooth';
-    o.frequency.setValueAtTime(140, t0);
-    // mild warble
-    var lfo = ac.createOscillator(); lfo.frequency.value = 3;
-    var lfoG = ac.createGain(); lfoG.gain.value = 20;
-    lfo.connect(lfoG).connect(o.frequency);
-    var lp = ac.createBiquadFilter(); lp.type = 'lowpass'; lp.frequency.value = 500;
-    var g = ac.createGain();
-    g.gain.setValueAtTime(0, t0);
-    g.gain.linearRampToValueAtTime(0.10, t0 + 0.4);
-    g.gain.linearRampToValueAtTime(0.08, t1 - 0.4);
-    g.gain.linearRampToValueAtTime(0, t1);
-    o.connect(lp).connect(g).connect(ac.destination);
-    o.start(t0); lfo.start(t0);
-    o.stop(t1 + 0.1); lfo.stop(t1 + 0.1);
-    _currentStop = function () { try { o.stop(); lfo.stop(); } catch (e) {} };
-  }
-
-  // ─── Pleural friction rub — grating, biphasic ─────────────
-  function playPleuralRub() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-
-    function rub(t, duration) {
-      var s = ac.createBufferSource();
-      s.buffer = noiseBuffer(ac, duration + 0.05);
-      var bp = ac.createBiquadFilter(); bp.type = 'bandpass'; bp.frequency.value = 250; bp.Q.value = 3;
-      var g = ac.createGain();
-      g.gain.setValueAtTime(0, t);
-      g.gain.linearRampToValueAtTime(0.14, t + 0.05);
-      g.gain.linearRampToValueAtTime(0.10, t + duration - 0.05);
-      g.gain.linearRampToValueAtTime(0, t + duration);
-      s.connect(bp).connect(g).connect(ac.destination);
-      s.start(t); s.stop(t + duration + 0.02);
-      return s;
-    }
-    var a = rub(now + 0.3, 0.9);  // inspiration rub
-    var b = rub(now + 1.7, 0.7);  // expiration rub
-    _currentStop = function () { try { a.stop(); b.stop(); } catch (e) {} };
-  }
-
-  // ─── Expiratory grunting ──────────────────────────────────
-  function playGrunting() {
-    var ac = ctx(); if (!ac) return;
-    stopCurrent();
-    var now = ac.currentTime + 0.05;
-
-    function grunt(t) {
-      var o = ac.createOscillator();
-      o.type = 'square';
-      o.frequency.setValueAtTime(180, t);
-      o.frequency.linearRampToValueAtTime(110, t + 0.45);
-      var lp = ac.createBiquadFilter(); lp.type = 'lowpass'; lp.frequency.value = 600;
-      var g = ac.createGain();
-      g.gain.setValueAtTime(0, t);
-      g.gain.linearRampToValueAtTime(0.12, t + 0.08);
-      g.gain.linearRampToValueAtTime(0.08, t + 0.35);
-      g.gain.linearRampToValueAtTime(0, t + 0.5);
-      o.connect(lp).connect(g).connect(ac.destination);
-      o.start(t); o.stop(t + 0.55);
-      return o;
-    }
-    var g1 = grunt(now + 0.5);
-    var g2 = grunt(now + 1.6);
-    var g3 = grunt(now + 2.7);
-    _currentStop = function () { try { g1.stop(); g2.stop(); g3.stop(); } catch (e) {} };
-  }
-
-  var PLAYERS = {
-    'normal':         playNormal,
-    'wheeze':         playWheeze,
-    'stridor':        playStridor,
-    'finecrackles':   playFineCrackles,
-    'coarsecrackles': playCoarseCrackles,
-    'rhonchi':        playRhonchi,
-    'pleuralrub':     playPleuralRub,
-    'grunting':       playGrunting
-  };
-
-  // Real audio files served from /public/audio/respiratory/. Where a real
-  // recording is available, it plays instead of the synthesizer. Source:
-  // Wikimedia Commons (J. Heilman MD, CC BY-SA 3.0). Missing entries fall
-  // back to synthesis.
-  var REAL_AUDIO = {
-    'wheeze':         '/audio/respiratory/wheeze.ogg',
-    'stridor':        '/audio/respiratory/stridor.ogg',
-    'finecrackles':   '/audio/respiratory/crackles-fine.ogg',
-    'coarsecrackles': '/audio/respiratory/crackles-coarse.ogg'
-    // normal, rhonchi, pleuralrub, grunting → synthesis only
-  };
-  var _audioEl = null;
-
-  function playReal(url) {
-    try {
-      stopCurrent();
-      if (!_audioEl) _audioEl = new Audio();
-      _audioEl.src = url;
-      _audioEl.play().catch(function () { /* ignore autoplay errors */ });
-      _currentStop = function () { try { _audioEl.pause(); _audioEl.currentTime = 0; } catch (e) {} };
-      return true;
-    } catch (e) {
-      return false;
-    }
-  }
-
-  window.RespSounds = {
-    play: function (name) {
-      var key = (name || '').toLowerCase();
-      // Prefer real recording if available
-      if (REAL_AUDIO[key]) {
-        if (playReal(REAL_AUDIO[key])) return true;
-      }
-      var fn = PLAYERS[key];
-      if (!fn) return false;
-      // Ensure audio context is running (browsers suspend until a user gesture)
-      var ac = ctx(); if (!ac) { showToast && showToast('Audio not supported', 'error'); return false; }
-      if (ac.state === 'suspended') ac.resume();
-      fn();
-      return true;
-    },
-    isReal: function (name) { return !!REAL_AUDIO[(name || '').toLowerCase()]; },
-    stop: stopCurrent,
-    list: Object.keys(PLAYERS)
-  };
-})();