wget -i %playlist% -O my-file.mp4

/*Initialization Code*/
// Открыть страницу или ссылку  из контекстного меню, от 27.12.2015. ..................
((contextMenu, savepage)=> {

   var menu = contextMenu.insertBefore(document.createElement("menu"), savepage);
   menu.setAttribute("label", "Открыть в другом браузере...");
   menu.setAttribute("class", "menu-iconic");
   menu.setAttribute("image", "data:image/x-icon;base64,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");
   menu.onclick =e=> e.target == menu && openWith(array[0][1]);
   addEventListener("popupshowing", ()=> menu.hidden = !gContextMenu, false, contextMenu);
   addDestructor(()=> menu.remove() );

   var arr = [
      [ "MPC-BE", "C:\\MPC-BE\\mpc-be.exe"],
      [ "PotPlayer", "C:\\PotPlayer\\PotPlayer.exe"],
      [ "Ummy",  "D:\\Лекарство\\UmmyVideoDownloader\\UmmyVideoDownloader.exe"]
      
               ]
   var menuPopup = menu.appendChild( document.createElement("menupopup") );              
   arr.forEach((m)=>{
      var label = m[0], path = m[1];
      var mItem = document.createElement("menuitem");
      mItem.setAttribute("label", label);
      mItem.setAttribute("class", "menuitem-iconic");
      mItem.setAttribute("image", "moz-icon://file://" + path); 
      mItem.onclick =()=> openWith(path);
      menuPopup.appendChild( mItem );
   });

   function openWith(path) {  
      var loc = content.document.location;
      var url = (loc.host.slice(-3) == '.рф') ? Services.io.newURI(loc.href, null, null).asciiSpec : loc;  
     
      var file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);    
      file.initWithPath(path);
      var process = Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
      process.init(file);

      !gContextMenu.onLink
      ? process.run(false, [content.location.href], 1)
      : process.run(false, [gContextMenu.linkURL], 1);
   };

})(document.getElementById("contentAreaContextMenu"), document.getElementById("context-savepage"));