var players = players.concat(APgrab('span', '(player|map|embed)'), APgrab('p', '(player|map|embed)'),
                             APgrab('div',  '(player|map|embed)'), APgrab('dl', '(map|embed)'));

    var rx = [ // more will be added in the future
      [/^(https:\/\/pastebin\.com)\/(embed(_i?frame|_js)?\/)?([\w-]+)/, '$1/embed_iframe/$4' ],
      [/^(.*\.svg)$/i, 'svg'],
      [/^(.*\.swf)$/i, 'swf'],
      [/^(.*\.(mp4|webm|ogv))$/i, 'video'],
      [/^(.*\.(mp3|opus|ogg|oga|flac))$/i, 'audio'],
      [/$^/, 'no comma after last element']
    ];

    var rx2 = [];
    if(typeof uAPErx == 'object') {
      for(var i=0; i<uAPErx.length; i++) rx2.push(uAPErx[i]);
    }
    for(var i=0; i<rx.length; i++) rx2.push(rx[i]);
    rx = rx2;