Google Docs - Audio Preview for MP3/WAV/OGG - WIP

google-docs-audio-preview.js

// ==UserScript==
// @name           Google Docs - Audio Preview for MP3/WAV/OGG
// @namespace      http://leith.caldwell.net.nz/, www.lucianobello.com.ar (original: http://www.manekinekoninja.com)
// @version        1.2.7
// @author         Leith Caldwell, Luciano Bello, edited by Tommy Smith, Dennis Schridde simplified it and removed flash usage
// @description    Shows a player (google player for MP3 or audio tag for other formats) to preview audio files at Google Docs. 
// @include        http://docs.google.com/file/d/*/edit*
// @include        https://docs.google.com/file/d/*/edit*
// ==/UserScript==
// the guts of this userscript
var filename = document.getElementsByClassName("docs-title-inner")[0].innerHTML;
var audioFile = window.location.protocol + '//docs.google.com/uc?authuser=0&id=' + window.location.pathname.substring(window.location.pathname.indexOf("/file/d/")+8, window.location.pathname.indexOf("/edit")) + '&export=download&confirm=no_antivirus';
var nopreview = document.getElementsByClassName("texmex-nopreview-msg")[0];

var audio = document.createElement("audio");
audio.setAttribute("src", audioFile);
audio.setAttribute("controls", "controls");
audio.innerHTML = "Your browser does not support the audio element.";
nopreview.appendChild(audio);