Google's $35 Chromecast dongle has scarcely been out of the headlines since its release, and although it is rather limited in what it can currently offer, this hasn't prevented developers and general Android enthusiasts from pushing the boundaries in trying to improve the service. Dev Leon Nicholls is one such individual, and his new Fling app allows Chromecast owners to stream a variety of video formats from their PC or Mac straight to the device.