The reason the "?" in the URL doesn't work is because "?" is used to query part of a website. Which is why this URL is <http://www.jwfan.com/forums/index.php?/topic/26916-michael-giacchinos-rogue-one-disney-fyc-site-contains-26-12-minutes-of-additional-music/>. Anything after the "?" is pulled from a database. So AreWeBling?.mp3 would pull ".mp3" from the website's database. And as we know, this in not valid. Removing the "?" from the URL will work.