ldoceonline.com-add-download-links-for-audio-files.user.js

// ==UserScript==
// @name         ldoceonline.com add download links for audio files
// @namespace    https://greasyfork.org/en/users/85671-jcunews
// @version      1.0.1
// @license      AGPL v3
// @author       jcunews
// @description  Context: https://old.reddit.com/r/software/comments/1arxfim/is_there_a_way_to_download_the_audio_files_from/
// @match        https://www.ldoceonline.com/dictionary/*
// @grant        none
// ==/UserScript==

(a => {
  if (a = document.querySelector('.dictlink:has(.speaker) .Tail')) {
    a.insertAdjacentHTML("beforebegin", '<a download id=adl style="display:none"></a><a href=# style="font-weight:bold;color:#070">Download all audio files</a>');
    (a = a.previousSibling).onclick = () => {
      document.querySelectorAll('span.speaker[data-src-mp3]').forEach(e => {
        adl.href = e.dataset.srcMp3;
        adl.click()
      })
    }
  }
})()