Greasy Fork

It still works if the following modification is made:
1) on line 181, you need to replace 'line.indexOf("_000.mp4a")>0' with 'line.search(/[0-9]+_[0-9]+\.mp4a/)>0' (thanks balonik)
2) after ` debuglog("downloadmp4a"); ` insert the line : ` document.audios = document.audios.filter( a => a.NAME.indexOf('[') == -1 ); ` Without the "`".

I tested it today.

Appreciate the reply and update. Sadly even after adding this link of code I still only get 7-8min audio files for the Simpsons.

It still works if you add the below script to Violentmonkey and delete the old one:
// ==UserScript==
// @name Disney+ Audio Downloader
// @name:fr Disney+ Audio Downloader
// @namespace https://greasyfork.org/users/572942-stegner
// @homepage https://greasyfork.org/scripts/405994-disney-audio-downloader
// @description Download audio from Disney+
// @description:fr Télécharger l'audio de Disney+
// @version 1.9
// @author stegner
// @license MIT; https://opensource.org/licenses/MIT
// @match https://www.disneyplus.com/*
// @grant none
// @run-at document-start
// @downloadURL https://update.greasyfork.org/scripts/405994/Disney%2B%20Audio%20Downloader.user.js
// @updateURL https://update.greasyfork.org/scripts/405994/Disney%2B%20Audio%20Downloader.meta.js
// ==/UserScript==

(function(open, send) {
'use strict';
var debug = (location.hash=="#debug");
debuglog("Script loaded : Disney+ Audio Downloader");

function init(){
debuglog("Document state : "+document.readyState);
if (document.readyState == "complete" || document.readyState == "loaded"){
start();
debuglog("Already loaded");
}
else {
if (window.addEventListener) {
window.addEventListener("load", start, false);
debuglog("Onload method : addEventListener");
} else if (window.attachEvent) {
window.attachEvent("onload", start);
debuglog("Onload method : attachEvent");
} else {
window.onload = start;
debuglog("Onload method : onload");
}
}
document.listen=true;
}

function start(){
debuglog("start");
if (typeof document.initaudio !== "undefined") {
document.initaudio();
}
if (typeof document.initsub !== "undefined") {
document.initsub();
}
listensend();
document.handleinterval = setInterval(buttonhandle,100);
}

if(!document.listen){
init();
}

document.initaudio = function(){
debuglog("initaudio");
document.audios = [];
document.content = new Uint8Array();
document.baseurl="";
document.m3u8found=false;
document.wait=false;
document.downloading=false;
document.filename="";
document.episode="";
document.audioid=null;

// Add download icon
document.styleSheets[0].addRule('#audioTrackPicker > div:before','content:"";color:#fff;padding-right:35px;padding-top:2px;background:url(data:image/png;base64,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) no-repeat right;width:20px;height:18px;position:absolute;top:6px;right:10px;opacity:0.6;cursor:pointer;');
document.styleSheets[0].addRule('#audioTrackPicker > div:hover:before','opacity:1;');
}

// Catch M3U8 files
function listensend(){
debuglog("listensend");

var newOpen = function(...args) {
if(!document.m3u8found && args.length>=2){
if(args[1].indexOf(".m3u8")>0 && document.url!=args[1]) {
// m3u8 url
debuglog("m3u8 found : "+args[1]);
document.url = args[1];
document.langs = [];
document.baseurl=document.url.substring(0,document.url.lastIndexOf('/')+1);
document.m3u8found=true;
getpagecontent(m3u8loaded,document.url);
}
}

open.call(this,...args);
}

var newSend = function(...args) {
if(args[0] && args[0].match && args[0].match(/globalization/)){
this.addEventListener('readystatechange', function(e) {
try {
document.globalization = JSON.parse(e.target.response).data.globalization;
} catch(e) {}
}, false);
}
send.call(this,...args);
}

if(typeof unsafeWindow !== "undefined"){
debuglog("Window state : unsafe");
var define = Object.defineProperty;
define(unsafeWindow.XMLHttpRequest.prototype, "open", {value: exportFunction(newOpen, window)});
define(unsafeWindow.XMLHttpRequest.prototype, "send", {value: exportFunction(newSend, window)});
}
else {
debuglog("Window state : safe");
XMLHttpRequest.prototype.open = newOpen;
XMLHttpRequest.prototype.send = newSend;
}
}

function m3u8loaded(response) {
debuglog("m3u8loaded");
if (typeof document.m3u8sub !== "undefined") {
document.m3u8sub(response);
}
if (typeof document.m3u8audio !== "undefined") {
document.m3u8audio(response);
}
}

document.m3u8audio = function(response){
var lines = response.split('#');
var found = false;
if(lines[2].indexOf("EXT-X-INDEPENDENT-SEGMENTS")==0){
// Audio tracks list
var quality=null;
lines.forEach(function(line) {
if(line.indexOf('TYPE=AUDIO')>0) {
var lang = linetoarray(line);
lang.LOCALIZED = document.globalization.audio.find(t => t.language == lang.LANGUAGE);
// audio infos
if(line.indexOf('GROUP-ID="eac-3"')>0 && (quality==null||quality=="eac-3")){
quality="eac-3";
document.audios.push(lang);
debuglog("Audio found : "+document.audios[document.audios.length-1].NAME);
}
else if(line.indexOf('GROUP-ID="aac-128k"')>0 && (quality==null||quality=="aac-128k")){
quality="aac-128k";
document.audios.push(lang);
debuglog("Audio found : "+document.audios[document.audios.length-1].NAME);
}
else if(line.indexOf('GROUP-ID="aac-64k"')>0 && (quality==null||quality=="aac-64k")){
quality="aac-64k";
document.audios.push(lang);
debuglog("Audio found : "+document.audios[document.audios.length-1].NAME);
}
}
});
}
else if(response.indexOf(".mp4a")>0) {
downloadmp4a(response);
}

}

function downloadmp4a(m3u8data){
debuglog("downloadmp4a");
var lines = m3u8data.split(/\r?\n/g);
var mapfound=false;
var percent;
var i=0;
document.downloadInterval = setInterval(function () {
var line = lines[i];
var url=null;
if(line!=null){
var uri = document.audios[document.audioid].URI;
if(line.indexOf("map.mp4a")>0 && !mapfound){
// Get mp4a map
debuglog("Download map");
url = document.baseurl+uri.substring(0,uri.lastIndexOf("/")+1)+line.substring(line.indexOf('"')+1,line.lastIndexOf('"'));
mapfound=true;
}
//old code
//else if(line.indexOf("_000.mp4a")>0 && line.indexOf("MAIN")>0){
else if(line.search(/[0-9]+_[0-9]+\.mp4a/)>0 && line.indexOf("MAIN")>0){
// Get mp4a data
url = document.baseurl+uri.substring(0,uri.lastIndexOf("/")+1)+line;
}

if(url!=null && !document.downloading){
// Download file
getpagecontent(mp4aloaded,url,true);
document.downloading=true;
i++;
}
else if(url==null){
// Skip line
i++;
}

if(percent!=Math.round((i/lines.length)*100)){
percent=Math.round((i/lines.length)*100);
document.styleSheets[0].addRule('#audioTrackPicker > div:nth-child('+(document.audioid+1)+'):before','content:"'+percent+'%";');
}
}
else {
// Download finished
clearInterval(document.downloadInterval);
document.styleSheets[0].addRule('#audioTrackPicker > div:nth-child('+(document.audioid+1)+'):before','content:"";');
exportblob(document.content, 'video/mp4');
document.content=new Uint8Array();
document.wait=false;
}
},10);
}


function mp4aloaded(response) {
debuglog("mp4aloaded");
document.downloading=false;
document.content=appendbuffer(document.content,response);
}

function linetoarray(line) {
var result = [];
var values = line.split(',');
values.forEach(function(value) {
var data = value.replace(/\r\n|\r|\n/g,'').split('=');
if(data.length>1) {
var key = data[0];
var content = data[1].replace(/"/g,'');
result[key]=content;
}
});
return result;
}

function buttonhandle() {
var buttons = document.getElementsByClassName("control-icon-btn");
if(buttons.length>0) {
if (typeof document.clickhandlesub !== "undefined") {
document.clickhandlesub();
}
if (typeof document.clickhandleaudio !== "undefined") {
document.clickhandleaudio();
}

document.filename = document.getElementsByClassName("title-field")[0]?.innerText;
if(document.getElementsByClassName("subtitle-field").length>0) {
document.episode = document.getElementsByClassName("subtitle-field")[0]?.innerText
}
}

if(document.oldlocation!=window.location.href&&document.oldlocation!=null) {
// location changed
document.m3u8found=false;
document.audios = [];
document.langs = [];
}

document.oldlocation=window.location.href;
}

document.clickhandleaudio = function() {
var picker = document.getElementsByClassName("options-picker audio-track-picker");
if(picker && picker[0]) {
picker[0].childNodes.forEach(function(child) {
var element = child.childNodes[0];
var lang = element.childNodes[1].innerHTML;
if(child.onclick==null) {
child.onclick = selectaudio;
}
});
}
}

function selectaudio(e) {
debuglog("selectaudio");
var width = this.offsetWidth;
// Check click position
if(e.layerX>=width-30&&e.layerX<=width-10&&e.layerY>=5&&e.layerY<=25){
// Download audio
download(this.childNodes[0].childNodes[1].innerHTML);
// Cancel selection
return false;
}
}

function download(langname) {
if(!document.wait){
debuglog("Download audio : "+langname);
var count=0;
document.audios.forEach(function(audio) {
if(audio.LOCALIZED && Object.values(audio.LOCALIZED.renditions).includes(langname)) {
document.audioid=count;
document.ad=(audio.NAME.indexOf("[Audio Description]")>0);
getpagecontent(m3u8loaded,document.baseurl+audio.URI);
document.wait=true;
}
count++;
});
if(count==0){
alert("An error has occurred, please reload the page.");
}
}

}

function getpagecontent(callback,url,binary) {
debuglog("Downloading : "+url);
var http=new XMLHttpRequest();
http.open("GET", url, true);
if(binary){
http.responseType = "arraybuffer";
}
http.onloadend = function() {
if(http.readyState == 4 && http.status == 200) {
if(binary){
callback(http.response);
}
else {
callback(http.responseText);
}
}
else if (http.status === 404) {
debuglog("Not found");
callback("");
}
else {
debuglog("Unknown error, retrying");
setTimeout(function () { getpagecontent(callback,url,binary); },100);
}
}
http.send();
}

function appendbuffer(buffer1, buffer2) {
var tmp = new Uint8Array(buffer1.byteLength + buffer2.byteLength);
tmp.set(new Uint8Array(buffer1), 0);
tmp.set(new Uint8Array(buffer2), buffer1.byteLength);
return tmp;
};

// Save file as arraybuffer
function exportblob(data, mimeType) {
debuglog("exportblob");
var blob, url;
var output = document.filename;
if(document.episode!="") {
output+= " - "+document.episode.replace(':','');
}
output += "."+document.audios[document.audioid].LANGUAGE;
if(document.ad){
output +=".ad";
}
output += ".mp4";


blob = new Blob([data], {
type: mimeType
});
url = window.URL.createObjectURL(blob);
downloadurl(url, output);
setTimeout(function() {
return window.URL.revokeObjectURL(url);
}, 1000);
};

function downloadurl(data, fileName) {
debuglog("Save audio");
var a;
a = document.createElement('a');
a.href = data;
a.download = fileName;
document.body.appendChild(a);
a.style = 'display: none';
a.click();
a.remove();
};

function debuglog(message){
if(debug){
console.log("%c [debug] "+message, 'background: #222; color: #bada55');
}
}
})(XMLHttpRequest.prototype.open, XMLHttpRequest.prototype.send);