The Pope's general audience is published, so far only in Italian (Google might help you with an "unofficial" translation, though it's usually a little sloppy!)
Here's the text: Vatican website. Here's the video. He speaks in Spanish a little after 46mins into the video. Pope John Paul II and Benedict XVI used to do most of the "salutations" in various languages, but now Pope Francis, not the linguist, relies on the work of priests to dictate on his behalf the "summaries" and greetings.