diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
index 91711f3..3c09125 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
@@ -2681,6 +2681,8 @@ sigClearBtn.addEventListener("click", () => {
 // --- Audio streaming ---
 const rxAudioBtn = document.getElementById("rx-audio-btn");
 const txAudioBtn = document.getElementById("tx-audio-btn");
+const RX_AUDIO_LABEL = "Play Audio";
+const TX_AUDIO_LABEL = "Transmit Audio";
 const audioStatus = document.getElementById("audio-status");
 const audioLevelFill = document.getElementById("audio-level-fill");
 const audioRow = document.getElementById("audio-row");
@@ -2722,6 +2724,15 @@ const MAX_RX_BUFFER_SECS = 0.25;
 const TARGET_RX_BUFFER_SECS = 0.04;
 const MIN_RX_JITTER_SAMPLES = 512;
 
+if (rxAudioBtn) {
+  rxAudioBtn.textContent = RX_AUDIO_LABEL;
+  rxAudioBtn.setAttribute("aria-label", RX_AUDIO_LABEL);
+}
+if (txAudioBtn) {
+  txAudioBtn.textContent = TX_AUDIO_LABEL;
+  txAudioBtn.setAttribute("aria-label", TX_AUDIO_LABEL);
+}
+
 function setAudioLevel(levelPct) {
   if (!audioLevelFill) return;
   const clamped = Math.max(0, Math.min(100, Number.isFinite(levelPct) ? levelPct : 0));
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index a68c5e4..974659e 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -240,8 +240,8 @@
             <div class="full-row label-below-row" id="audio-row">
               <div class="label"><span>Audio</span></div>
               <div class="inline" style="gap: 0.6rem; flex-wrap: wrap; align-items: center;">
-                <button id="rx-audio-btn" type="button">RX Audio</button>
-                <button id="tx-audio-btn" type="button">TX Audio</button>
+                <button id="rx-audio-btn" type="button">Play Audio</button>
+                <button id="tx-audio-btn" type="button">Transmit Audio</button>
                 <label class="vol-label">RX<input type="range" id="rx-vol" min="0" max="100" value="80" class="vol-slider" /><small class="vol-pct" id="rx-vol-pct">80%</small></label>
                 <label class="vol-label">TX<input type="range" id="tx-vol" min="0" max="100" value="80" class="vol-slider" /><small class="vol-pct" id="tx-vol-pct">80%</small></label>
                 <div id="audio-level">