If you reach the end of the content in the queue, Sholize will automatically suggest new titles and play them.
You can also automatically fill the queue with automatic suggestions by clicking on the small icon in your room below the content box and selecting "Fill queue".
You can also disable this option if you wish. To do so, go to the room settings by clicking on the small icon . Then, in the "Options" section, you can deactivate the "Automatic suggestion" setting.