Inject me on discogs.com pages with iframe#youtube_player_placeholder & then use your favorite playlist players

discogs-screener.js

var test = "iframe#youtube_player_placeholder";

function parseyt(iframe_selector) {

  var take = document.querySelector(iframe_selector).src.split('%2C');
  var list = [];

  list[0] = take[0].match("playlist=(.{11})")[1];

  for ( var i = 1 ; i < take.length - 1 ; i++ ) {
    list[i] = take[i];
  }

  list[list.length] = take[list.length].split('&')[0];

  return list;

}

function m3u(iframe_selector) {

  m3u_string = '';
  list = parseyt(iframe_selector);
  list.forEach(function(videoId) {
    m3u_string += 'https://youtube.com/watch?v=' + videoId + '\n';
  })

  return m3u_string;

}

try {
  m3u(test);
} catch (e) {
  console.log('debug :)');
}