diff --git a/src/EntitySidebarImg.as b/src/EntitySidebarImg.as
index 9e747e3..bffec2e 100644
--- a/src/EntitySidebarImg.as
+++ b/src/EntitySidebarImg.as
@@ -1,5 +1,7 @@
 package  
 {
+	import flash.display.BitmapData;
+	import flash.filesystem.File;
 	import net.flashpunk.Entity;
 	import net.flashpunk.Graphic;
 	import net.flashpunk.graphics.Image;
@@ -19,6 +21,14 @@ package
 
 			super(sidebar, img.scaledHeight, img);
 		}
+		public function OnImgReload(bmp:BitmapData, file:File): void
+		{
+			var imgNew:Image = new Image(bmp);
+			imgNew.scale = sidebar.width / imgNew.width;
+			imgNew.alpha = img.alpha;
+			img = imgNew;
+			graphic = img;
+		}
 		override public function Fade(pct:Number):void 
 		{
 			super.Fade(pct);
diff --git a/src/EvNewImg.as b/src/EvNewImg.as
index 3e6be1f..1dc14c2 100644
--- a/src/EvNewImg.as
+++ b/src/EvNewImg.as
@@ -9,11 +9,11 @@ package
 	 */
 	public class EvNewImg extends Event
 	{
-		public var rel: String;
+		public var urp: String;
 		public var bmp: BitmapData;
-		public function EvNewImg(type: String, rel: String, bmp: BitmapData) 
+		public function EvNewImg(type: String, urp: String, bmp: BitmapData) 
 		{
-			this.rel = rel;
+			this.urp = urp;
 			this.bmp = bmp;
 			super(type);
 		}
diff --git a/src/Factory.as b/src/Factory.as
index 18ca938..a7add19 100644
--- a/src/Factory.as
+++ b/src/Factory.as
@@ -1,6 +1,8 @@
 package  
 {
+	import flash.display.Bitmap;
 	import flash.display.BitmapData;
+	import flash.filesystem.File;
 	import flash.geom.Point;
 	import net.flashpunk.Entity;
 	import net.flashpunk.Graphic;
@@ -15,19 +17,35 @@ package
 	public class Factory extends EntitySidebarImg
 	{
 		private var bmp: BitmapData;
-		private var relf: String;
-		public function Factory(sidebar: Sidebar, relf: String, bmp:BitmapData) 
+		private var urpf: String;
+		private var filewatcher: FileWatcher;
+		public function Factory(sidebar: Sidebar, urpf: String, bmp:BitmapData) 
 		{
 			super(sidebar, bmp);
 			this.bmp = bmp;
-			this.relf = relf;
+			this.urpf = urpf;
+		}
+		override public function added():void 
+		{
+			super.added();
+			var stage: WorldStage = WorldStage(world);
+			filewatcher = FileWatcher.Get(stage.UabFromUrf(stage.UrfFromUrp(urpf)));
+			filewatcher.Register(function(bmpNew:BitmapData, file:File):void {
+				bmp = bmpNew;
+				OnImgReload(bmpNew, file);
+			}, this);
+		}
+		override public function removed():void 
+		{
+			super.removed();
+			filewatcher.Unregister(this);
 		}
 		override public function OnClick():void 
 		{
 			var worldStage: WorldStage = WorldStage(world);
 			var posMouseReal: Point = worldStage.PointRealFromScreen(new Point(Input.mouseX, Input.mouseY));
-			var relfBmp: String = worldStage.RelFull(relf);
-			var tok: Token = new Token(bmp, relfBmp, posMouseReal.x - this.bmp.width / 2, posMouseReal.y - this.bmp.height / 2);
+			var urffBmp: String = worldStage.UrfFromUrp(urpf);
+			var tok: Token = new Token(bmp, urffBmp, posMouseReal.x - this.bmp.width / 2, posMouseReal.y - this.bmp.height / 2);
 			world.add(tok);
 			worldStage.tokSelected = tok;
 		}
diff --git a/src/FileWatcher.as b/src/FileWatcher.as
new file mode 100644
index 0000000..de30ded
--- /dev/null
+++ b/src/FileWatcher.as
@@ -0,0 +1,64 @@
+package  
+{
+	import flash.display.BitmapData;
+	import flash.events.Event;
+	import flash.events.EventDispatcher;
+	import flash.filesystem.File;
+	/**
+	 * ...
+	 * @author jjp
+	 */
+	public class FileWatcher
+	{
+		private var file: File;
+		private var dateModified: Date;
+		private var size: Number;
+		private var rgobj_dgOnChange: Array;
+		
+		private static var mpabsf_filewatcher:Object = { };
+		
+		public function FileWatcher(file: File)
+		{
+			this.file = file;
+			this.dateModified = file.modificationDate;
+			this.size = file.size;
+			this.rgobj_dgOnChange = [];
+		}
+		public static function Get(absf: String): FileWatcher 
+		{
+			var filewatcher:FileWatcher = mpabsf_filewatcher[absf];
+			if (filewatcher === null)
+			{
+				filewatcher = new FileWatcher(new File(absf));
+				mpabsf_filewatcher[absf] = filewatcher;
+			}
+			return filewatcher;
+		}
+		public static function CheckAll():void 
+		{
+			for each(var filewatcher:FileWatcher in mpabsf_filewatcher)
+				filewatcher.Check();
+		}
+		public function Register(dgOnChange: Function, obj:*):void {
+			rgobj_dgOnChange.push([obj, dgOnChange]);
+		}
+		public function Unregister(obj:*):void {
+			rgobj_dgOnChange = rgobj_dgOnChange.filter(function(obj_dgOnChange:Array, _:*, __:*):Boolean { return (obj_dgOnChange[0] !== obj); } );
+			if (rgobj_dgOnChange.length == 0)
+				delete mpabsf_filewatcher[file.nativePath];
+		}
+		public function Check():void
+		{
+			if (this.dateModified !== file.modificationDate || this.size !== file.size)
+			{
+				this.dateModified = file.modificationDate;
+				this.size = file.size;
+				Imgdir.LoadBmp(file, function(bmp:BitmapData, fileT:File):void {
+					for each(var obj_dgOnChange:Array in rgobj_dgOnChange)
+						obj_dgOnChange[1](bmp, fileT);
+				}, null);
+			}
+		}
+	}
+
+}
\ No newline at end of file
diff --git a/src/Folder.as b/src/Folder.as
index 34401eb..69a33f3 100644
--- a/src/Folder.as
+++ b/src/Folder.as
@@ -17,21 +17,21 @@ package
 		[Embed(source = '../assets/folder.png')]
 		private const bmpFolder:Class;
 		
-		private var reld: String;
+		private var urpd: String;
 		private var text: Text;
 		
-		public function Folder(sidebar: Sidebar, reld: String) 
+		public function Folder(sidebar: Sidebar, urpd: String) 
 		{
 			super(sidebar, bmpFolder);
-			text = new Text(reld, 2, (img.scaledHeight / 2) - 6);
+			text = new Text(urpd, 2, (img.scaledHeight / 2) - 6);
 			text.color = 0x4444FF;
 			addGraphic(text);
 
-			this.reld = reld;
+			this.urpd = urpd;
 		}
 		override public function OnClick():void 
 		{
-			WorldStage(world).Chdir(this.reld);
+			WorldStage(world).Chdir(this.urpd);
 		}
 		override public function Fade(pct:Number):void
 		{
diff --git a/src/Imgdir.as b/src/Imgdir.as
index 17610ca..c1a811d 100644
--- a/src/Imgdir.as
+++ b/src/Imgdir.as
@@ -18,15 +18,15 @@ package
 	{
 		public static const LOADED: String = "ImgLoaded";
 		private var dir: File;
-		private var mprelf_bmp: Object;
-		private var rgreld: Object;
+		private var mpurpf_bmp: Object;
+		private var rgurpd: Object;
 		public function Imgdir(url: String) 
 		{
 			trace("imgdir: " + url);
 			this.dir = new File(url);
 			this.dir.addEventListener(FileListEvent.DIRECTORY_LISTING, OnDirUpdate);
-			this.mprelf_bmp = { };
-			this.rgreld = { };
+			this.mpurpf_bmp = { };
+			this.rgurpd = { };
 		}
 		
 		public function Update() : void
@@ -38,13 +38,13 @@ package
 		{
 			for each (var file: File in ev.files)
 			{
-				var rel: String = file.name;
-				if (file.isDirectory && !rgreld[rel])
+				var urp: String = file.name;
+				if (file.isDirectory && !rgurpd[urp])
 				{
-					rgreld[rel] = true;
-					dispatchEvent(new EvNewImg(LOADED, rel, null));
+					rgurpd[urp] = true;
+					dispatchEvent(new EvNewImg(LOADED, urp, null));
 				}
-				else if (!file.isDirectory && /\.(png|gif|jpg|jpeg)$/i.test(rel) && !mprelf_bmp[rel])
+				else if (!file.isDirectory && /\.(png|gif|jpg|jpeg)$/i.test(urp) && !mpurpf_bmp[urp])
 					LoadBmp(file, OnBmpLoaded);
 			}
 		}
@@ -67,7 +67,7 @@ package
 		}
 		private function OnBmpLoaded(bmp: BitmapData, file: File) : void
 		{
-			mprelf_bmp[file.name] = bmp;
+			mpurpf_bmp[file.name] = bmp;
 			this.dispatchEvent(new EvNewImg(LOADED, file.name, bmp));
 		}
 	}
diff --git a/src/Token.as b/src/Token.as
index e011d6b..77a614b 100644
--- a/src/Token.as
+++ b/src/Token.as
@@ -1,10 +1,13 @@
 package  
 {
 	import flash.display.BitmapData;
+	import flash.filesystem.File;
 	import flash.geom.Point;
 	import flash.geom.Rectangle;
 	import net.flashpunk.Entity;
 	import net.flashpunk.graphics.Image;
+	import net.flashpunk.Tween;
+	import net.flashpunk.tweens.misc.Alarm;
 	import net.flashpunk.utils.Draw;
 	import net.flashpunk.utils.Input;
 	import net.flashpunk.utils.Key;
@@ -17,16 +20,18 @@ package
 	{
 		private var drag: Drag;
 		public var posReal: Point;
-		private var relf: String;
+		private var urff: String;
 		private var xml: XML;
-		public function Token(source:BitmapData, relf: String, x: int, y: int, xml:XML = null) 
+		private var filewatcher: FileWatcher;
+		
+		public function Token(source:BitmapData, urff: String, x: int, y: int, xml:XML = null) 
 		{
 			this.posReal = new Point(x, y);
 			super(x, y, new Image(source));
 			this.type = "Token";
 			this.layer = WorldStage.LAYER_TOKENS;
 			this.drag = null;
-			this.relf = relf;
+			this.urff = urff;
 			if (xml === null)
 				this.xml = XML("<token/>");
 			else
@@ -36,6 +41,13 @@ package
 		{
 			return WorldStage(this.world).tokSelected === this;
 		}
+		override public function added():void 
+		{
+			super.added();
+			FixupZoom();
+			filewatcher = FileWatcher.Get(WorldStage(world).UabFromUrf(urff));
+			filewatcher.Register(OnFileChanged, this);
+		}
 		override public function removed():void 
 		{
 			super.removed();
@@ -44,11 +56,11 @@ package
 				drag.Done();
 				drag = null;
 			}
+			filewatcher.Unregister(this);
 		}
-		override public function added():void 
+		public function OnFileChanged(bmp: BitmapData, file: File): void
 		{
-			super.added();
-			FixupZoom();
+			graphic = new Image(bmp);
 		}
 		private function FixupZoom(): Number
 		{
@@ -99,9 +111,9 @@ package
 					{
 						drag = Drag.Claim();
 						if (drag !== null)
-							trace("drag claimed for " + relf);
+							trace("drag claimed for " + urff);
 						else
-							trace("drag failed for " + relf);
+							trace("drag failed for " + urff);
 					}
 
 					if (drag !== null)
@@ -129,7 +141,7 @@ package
 			var xml: XML = this.xml.copy();
 			xml.@x = int(posReal.x);
 			xml.@y = int(posReal.y);
-			xml.@path = relf;
+			xml.@path = urff;
 			return xml;
 		}
 	}
diff --git a/src/WorldStage.as b/src/WorldStage.as
index 7ce7019..0af873f 100644
--- a/src/WorldStage.as
+++ b/src/WorldStage.as
@@ -33,9 +33,8 @@ package
 
 		private var imgdir: Imgdir;
 		private var drag: Drag;
-		private var absd: String;
-		private var relf: String;
-		private var rgreld: Array;
+		private var urff: String;
+		private var rgurpd: Array;
 		private var alarmImgdir: Tween;
 		private var rgsidebar: Vector.<Sidebar>;
 		
@@ -46,14 +45,15 @@ package
 		public var tokSelected: Token;
 		public var zoom: Number;
 		public var pointView: Point;
+		public var uabd: String;
 		
-		public function WorldStage(absf: String) 
+		public function WorldStage(uabf: String) 
 		{
 			super();
-			var match:* = /(.*\/)([^\/]*)$/.exec(absf);
-			this.absd = match[1];
-			this.relf = match[2];
-			this.rgreld = [];
+			var match:* = /(.*\/)([^\/]*)$/.exec(uabf);
+			this.uabd = match[1];
+			this.urff = match[2];
+			this.rgurpd = [];
 			this.rgsidebar = new Vector.<Sidebar>();
 			
 			var sidebarSave: Sidebar = AddSidebar(new Sidebar(FP.width - 32, FP.width, 0, 0, 32, 32, LAYER_SAVE, false, false));
@@ -69,6 +69,7 @@ package
 			Chdir(null);
 			ToggleUI();
 			Load();
+			addTween(new Alarm(3, FileWatcher.CheckAll, Tween.LOOPING), true);
 		}
 		
 		public function KillToken(tok: Token): void
@@ -90,18 +91,23 @@ package
 		{
 			var entity: Entity;
 			if (ev.bmp === null)
-				entity = new Folder(SidebarFind(LAYER_SIDEBAR), ev.rel);
+				entity = new Folder(SidebarFind(LAYER_SIDEBAR), ev.urp);
 			else
-				entity = new Factory(SidebarFind(LAYER_SIDEBAR), ev.rel, ev.bmp);
+				entity = new Factory(SidebarFind(LAYER_SIDEBAR), ev.urp, ev.bmp);
 		}
-		public function RelFull(relf:String = null): String
+		public function UabFromUrf(urf:String): String
 		{
-			var rel:String = rgreld.join(File.separator);
-			if (relf !== null)
-				rel = rel + File.separator + relf;
-			return rel;
+			return uabd + urf;
 		}
-		public function Chdir(reld: String): void
+		public function UrfFromUrp(urp:String): String
+		{
+			return Urfd() + urp;
+		}
+		public function Urfd(): String
+		{
+			return rgurpd.join("/") + "/";
+		}
+		public function Chdir(urpd: String): void
 		{
 			if (alarmImgdir !== null)
 			{
@@ -115,19 +121,19 @@ package
 					entity.active = false;
 				}
 			}
-			if (reld === "..")
-				rgreld = rgreld.slice(0, rgreld.length - 1);
-			else if (reld !== null)
-				rgreld.push(reld);
+			if (urpd === "..")
+				rgurpd = rgurpd.slice(0, rgurpd.length - 1);
+			else if (urpd !== null)
+				rgurpd.push(urpd);
 			
-			imgdir = new Imgdir(absd + RelFull());
+			imgdir = new Imgdir(UabFromUrf(Urfd()));
 			imgdir.addEventListener(Imgdir.LOADED, OnNewImg);
 			imgdir.Update();
 			alarmImgdir = this.addTween(new Alarm(3, imgdir.Update, Tween.LOOPING), true);
 			
-			AddSidebar(new Sidebar(0, -32, 0, 0, 32, FP.height, LAYER_SIDEBAR, reld !== null /*fStartShown*/, true));
+			AddSidebar(new Sidebar(0, -32, 0, 0, 32, FP.height, LAYER_SIDEBAR, urpd !== null /*fStartShown*/, true));
 
-			if (rgreld.length > 0)
+			if (rgurpd.length > 0)
 				OnNewImg(new EvNewImg(Imgdir.LOADED, "..", null));
 		}
 		private function SidebarFind(layer: int):Sidebar
@@ -242,14 +248,14 @@ package
 		public function Save(): void
 		{
 			var stream: FileStream = new FileStream();
-			stream.open(new File(absd + File.separator + relf), FileMode.WRITE);
+			stream.open(new File(UabFromUrf(urff)), FileMode.WRITE);
 			stream.writeUTFBytes(GenXML().toXMLString());
 			stream.close();
 			ShowMsg("Saved.");
 		}
 		public function Load(): void
 		{
-			var file: File = new File(absd + File.separator + relf);
+			var file: File = new File(UabFromUrf(urff));
 			if (file.exists)
 			{
 				var stream: FileStream = new FileStream();
@@ -268,7 +274,7 @@ package
 		private function LoadToken(xml: XML, itoken: int, rgtoken:Object): void
 		{
 			trace("loading " + xml.@path);
-			Imgdir.LoadBmp(new File(absd + File.separator + xml.@path), 
+			Imgdir.LoadBmp(new File(UabFromUrf(xml.@path)), 
 				function(bmp: BitmapData, file: File):void {
 					trace("loadtoken: " + xml.@path);
 					var token: Token = new Token(bmp, xml.@path.toString(), int(xml.@x), int(xml.@y), xml);
diff --git a/todo.txt b/todo.txt
new file mode 100644
index 0000000..cadabec
--- /dev/null
+++ b/todo.txt
@@ -0,0 +1,12 @@
+- fix scrollwheel sensitivity
+- zoom to 100% (magnifying glass icon?)
+- show 0,0, maybe some other griddy options
+
+- finalize "library" notion
+- text objects
+
+- tilemap
+- layers
+
+DONE:
+- auto image reloading