--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -471,17 +471,16 @@ pref("browser.tabs.extraDragSpace", fals
 
 // When tabs opened by links in other tabs via a combination of
 // browser.link.open_newwindow being set to 3 and target="_blank" etc are
 // closed:
 // true   return to the tab that opened this tab (its owner)
 // false  return to the adjacent tab (old default)
 pref("browser.tabs.selectOwnerOnClose", true);
 
-pref("browser.tabs.showAudioPlayingIcon", true);
 // This should match Chromium's audio indicator delay.
 pref("browser.tabs.delayHidingAudioPlayingIconMS", 3000);
 
 // Pref to control whether we use a separate privileged content process
 // for about: pages. This pref name did not age well: we will have multiple
 // types of privileged content processes, each with different privileges.
 // types of privleged content processes, each with different privleges.
 #if defined(MOZ_CODE_COVERAGE) && defined(XP_LINUX) || defined(MOZ_ASAN)

--- a/browser/base/content/tabbrowser.js
+++ b/browser/base/content/tabbrowser.js
@@ -787,20 +787,17 @@
       let browser = aBrowser || this.selectedBrowser;
       if (!browser.tabModalPromptBox) {
         browser.tabModalPromptBox = new TabModalPromptBox(browser);
       }
       return browser.tabModalPromptBox;
     },
 
     getTabFromAudioEvent(aEvent) {
-      if (
-        !Services.prefs.getBoolPref("browser.tabs.showAudioPlayingIcon") ||
-        !aEvent.isTrusted
-      ) {
+      if (!aEvent.isTrusted) {
         return null;
       }
 
       var browser = aEvent.originalTarget;
       var tab = this.getTabForBrowser(browser);
       return tab;
     },
 

--- a/browser/base/content/test/tabs/browser_audioTabIcon.js
+++ b/browser/base/content/test/tabs/browser_audioTabIcon.js
@@ -645,22 +645,16 @@ async function test_delayed_tabattr_remo
     {
       gBrowser,
       url: PAGE,
     },
     taskFn
   );
 }
 
-add_task(async function() {
-  await SpecialPowers.pushPrefEnv({
-    set: [["browser.tabs.showAudioPlayingIcon", true]],
-  });
-});
-
 requestLongerTimeout(2);
 add_task(async function test_page() {
   await BrowserTestUtils.withNewTab(
     {
       gBrowser,
       url: PAGE,
     },
     test_on_browser

--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -671,18 +671,16 @@ pref("layout.accessiblecaret.script_chan
 
 // Optionally provide haptic feedback on longPress selection events.
 pref("layout.accessiblecaret.hapticfeedback", true);
 
 // Initial text selection on long-press is enhanced to provide
 // a smarter phone-number selection for direct-dial ActionBar action.
 pref("layout.accessiblecaret.extend_selection_for_phone_number", true);
 
-pref("browser.tabs.showAudioPlayingIcon", true);
-
 pref("dom.serviceWorkers.enabled", true);
 
 // Allow service workers to open windows for a longer period after a notification
 // click on mobile.  This is to account for some devices being quite slow.
 pref("dom.serviceWorkers.disable_open_click_delay", 5000);
 
 pref("dom.push.debug", false);
 pref("dom.push.maxRecentMessageIDsPerSubscription", 0);