This article used to describe the Centova Cast panel. Get Stream Hosting radio stations now run on our own radio platform, managed from the Radio section of your account; the Radio dashboard user guide covers it tab by tab.
AutoDJ comes with the Premium and Platinum plans and needs nothing switched on: upload music under Music, put it in a playlist under Playlists, and press Save programming. Changes to playlists and the schedule go on air only when you save.