Replace SWR error message at http://mp3-live.swr.de/ with player links.

swrplayer.user.js

// ==UserScript==
// @name        SWR Radio M3U
// @namespace   de.schmucker-partner.swr.m3u
// @include     http://mp3-live.swr.de/
// @version     1
// @grant       none
// ==/UserScript==
var urls = [
  'http://mp3-live.swr.de/swr1bw_m.m3u',
  'http://mp3-live.swr.de/swr1rp_m.m3u',
  'http://mp3-live.swr.de/swr2_m.m3u',
  'http://mp3-live.swr.de/swr4bw_m.m3u',
  'http://mp3-live.swr.de/swr4rp_m.m3u',
  'http://mp3-live.swr.de/swrinfo_m.m3u'
];


document.body.innerHTML="";

document.title="SWR";
for(var i=0;i<urls.length;i++){
  var x = new XMLHttpRequest();
  x.open("GET",urls[i],true);
  x.overrideMimeType("text/plain");
  x.onload = function(req){
    var url = /(?:^|\n\r?)(http\:\/\/.*?)(?:\n|$)/.exec(req.responseText);       
    if(url){
      var title = /(?:^|\n\r?)#EXTINF\:\-1,(.*?)(?:\n|$)/.exec(req.responseText);
      if(title){
        var h=document.createElement("h3");
        h.textContent = title[1];
        document.body.appendChild(h);
      }
        
      var media = document.createElement('video');
      media.autoplay = false;
      media.src = url[1];
      media.controls = true;
      media.style.height="32px";
      media.style.width="96px"
      document.body.appendChild(media);
    }
  }.bind(null,x);
  x.send();
}