Brian,  Find the addLayerToMap function in the MapManager.mxml and add something like this:case "feature":
                    {
                        var featureLayer:FeatureLayer = new FeatureLayer(url);
                        featureLayer.addEventListener(FlexEvent.HIDE, featureLayer_hideHandler);
                        featureLayer.alpha = alpha;
                        featureLayer.id = label;
                        featureLayer.name = label;
                        featureLayer.outFields = [ '*' ]; // TODO: be smarter
                        featureLayer.token = token;
                        featureLayer.visible = visible;
                        featureLayer.useMapTime = useMapTime;
                        if (label == "Traffic Cameras")
                        {
                            var picSymbol:PictureMarkerSymbol = new PictureMarkerSymbol("assets/images/i_camera.png",30,30,0,0,0);
                            var rend:Renderer = new SimpleRenderer(picSymbol);
                            featureLayer.renderer = rend;
                        }
                        if (label == "Louisville Police Facilities")
                        {
                            var picSymbol0:PictureMarkerSymbol = new PictureMarkerSymbol("assets/images/i_policestation.png",30,30,0,0,0);
                            var rend0:Renderer = new SimpleRenderer(picSymbol0);
                            featureLayer.renderer = rend0;
                        }
                        if (label == "Louisville Places")
                        {
                            var picSymbol2:PictureMarkerSymbol = new PictureMarkerSymbol("assets/images/bat.png",30,30,0,0,0);
                            var picSymbol3:PictureMarkerSymbol = new PictureMarkerSymbol("assets/images/horse.png",30,30,0,0,0);
                            var picSymbol4:PictureMarkerSymbol = new PictureMarkerSymbol("assets/images/mansion.png",30,30,0,0,0);
                            var uniqueValuerenderer:UniqueValueRenderer = new UniqueValueRenderer();
                            uniqueValuerenderer.attribute = "NAME";
                            var uniqueValueInfos:Array = [];
                            uniqueValueInfos.push(new UniqueValueInfo(picSymbol3, "Chuchhill Downs"));
                            uniqueValueInfos.push(new UniqueValueInfo(picSymbol2, "louisville slugger factory"));
                            uniqueValueInfos.push(new UniqueValueInfo(picSymbol4, "Whitehall Mansion"));
                            uniqueValuerenderer.infos = uniqueValueInfos;
                            featureLayer.renderer = uniqueValuerenderer;
                        }
                        if (useAMF)
                        {
                            featureLayer.useAMF = (useAMF == "true");
                        }
                        if (mode)
                        {
                            featureLayer.mode = mode;
                        }
                        if (definitionExpression)
                        {
                            featureLayer.definitionExpression = definitionExpression;
                        }
                        if (proxyUrl && useProxy)
                        {
                            featureLayer.proxyURL = proxyUrl;
                        }
                        layerObject.layer = featureLayer;
                        map.addLayer(featureLayer);
                        break;
                    }