Heat the butter in a small saucepan over medium heat. When the butter has melted and looks foamy, add the brown sugar and mix it in. Add the apple and toss for a minute. Add the dates, figs and sultanas and cook, stirring, about a minute, until the fruit is well coated. Add the cinnamon and wine (or port). Bring to a boil, then turn the heat to low and cover for 10 minutes, stirring from time to time. Remove from the heat and mash the fruit slightly. Set aside.