Listening to audiobooks will help you improve your prononciation, if you're not a native English speaker, it will help also gain a lot of voccabulary. Audiobooks are great but unfortunately they're pretty expensive. But there are a ton of free audiobook recordings in the public domain, and now you can easily listen to them on your smartphone for free, thanks to this audible android application. Short Audible Stories is a free android application that will allow you to listen to a collection of different audiobooks.