PopupSound https://stackoverflow.com/questions/78168305/

content-script.js

// Helper function to play audio
function playAudio(audioFile) {
  console.log(audioFile, chrome.runtime.getURL(audioFile));
  const audio = new Audio(chrome.runtime.getURL(audioFile)); // Use chrome.runtime.getURL for packaged extension resources
  // Play the audio only when the EventListener for click is triggered
  audio.play();
}

// Helper function for setting volume
function setAudioVolume(volumeLevel) {
  const audioElements = document.querySelectorAll('audio');
  audioElements.forEach(audio => {
      audio.volume = volumeLevel;
  });
}

// Receive messages from your service worker
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  console.log(message, sender, sendResponse);
  switch (message.action) {
      case 'playNavigationSound':
          playAudio('test.wav');
          break;
      case 'playDownloadCompleteSound':
          playAudio('test.wav');
          break;
      case 'playDownloadErrorSound':
          playAudio('test.wav');
          break;
      case 'playMuteWarningSound':
          playAudio('test.wav');
          break;
      case 'changeVolme':
          setAudioVolume(0.75);
          break;
      default:
          console.log('Unknown message action:', message.action);
  }
});  

manifest.json

{
  "manifest_version": 3,
  "name": "PopupSound",
  "description": "Plays a click sound when you click on a link. Also plays a trumpet sound when you finish downloading a file.",
  "author": "Michael Gunter",
  "version": "3.0",
  "offline_enabled": true,
  "background": {
    "service_worker": "service-worker.js"
  },
  "content_scripts": [
    {
      "matches": ["<all_urls>"], 
      "js": ["content-script.js"],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "*.wav"
      ],
      "matches": [
        "<all_urls>"
      ],
      "extensions": []
    }
  ],
  "permissions": [
    "webNavigation",
    "downloads",
    "tabs",
    "activeTab"
  ],
  "host_permissions": ["<all_urls>"],
  "content_security_policy": {}
}

service-worker.js

"use strict";

function sendAudioMessage(actionType, audioFile) {
  chrome.tabs.query({ active: true, currentWindow: true }, function(tabs) {
    tabs.forEach(tab => {
      console.log(tab);
      if (tab.url.startsWith("chrome")) return false;
      chrome.tabs.sendMessage(tab.id, { action: actionType });
    });
  });
}

chrome.webNavigation.onCreatedNavigationTarget.addListener(onNav);
chrome.webNavigation.onBeforeNavigate.addListener(onNav);
chrome.webNavigation.onReferenceFragmentUpdated.addListener(onNav);
chrome.webNavigation.onHistoryStateUpdated.addListener(onNav);

function onNav(props) {
  const {frameId} = props;
  console.log(props);
  if(frameId > 0) return;
  sendAudioMessage('playNavigationSound');
}

chrome.downloads.onChanged.addListener(delta => {
  if(delta.state && delta.state.current === "complete") {
    sendAudioMessage('playDownloadCompleteSound');
  }
  if(delta.error && delta.error.current) {
    sendAudioMessage('playDownloadErrorSound');
  }
});

chrome.tabs.onUpdated.addListener((tabId, {mutedInfo}) => {
  if(mutedInfo && mutedInfo.reason === "user") {
    sendAudioMessage('playMuteWarningSound'); 
  }
});

function changeVolume(volumeLevel) {
  chrome.tabs.query({ active: true, currentWindow: true }, function(tabs) {
    tabs.forEach(tab => {
      if (tab.url.startsWith("chrome")) return;
      chrome.tabs.sendMessage(tab.id, { action: 'changeVolume', volume: volumeLevel });
    });
  });
}

// *** Message Handler ***
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  console.log(message, sender, sendResponse);
  switch (message.action) {
    case 'playNavigationSound':
      sendAudioMessage('playNavigationSound');
      break;
    case 'playDownloadCompleteSound':
      sendAudioMessage('playDownloadCompleteSound');
      break;
    case 'playDownloadErrorSound':
      sendAudioMessage('playDownloadErrorSound');
      break;
    case 'playMuteWarningSound':
      sendAudioMessage('playMuteWarningSound');
      break;
    case 'changeVolume':
      changeVolume(0.75); 
      break;
    default:
      console.log('Unknown message action:', message.action);
  }
});

Thank you.

No worries. You'll have to do some error handling and firther debugging to find out where and why Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist. is occurring.