Tyler is in a rock band and they're recording their first album. They want to release a few songs for free on their website, but they're having trouble offering free downloads over iOS. Leo says that iOS can play MP3s, but it's hard to get mobile apps to talk to one another. Leo advises putting them on SoundCloud. It's a good place to do it because he can do it for free. And SoundCloud has an app that people can use to play the songs on mobile as well.