diff --git a/.gitignore b/.gitignore
index 1a71f3c..9ed59d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 *.pyc
-build
+MANIFEST
+build/
+dist/
 terrain.png
 cachedir*
 
@@ -14,10 +16,10 @@ ImPlatform.h
 Imaging.h
 
 # various forms of compiled c_overviewer extensions
-overviewer/c_overviewer.so
-overviewer/c_overviewer.pyd
-overviewer/c_overviewer_d.pyd
-overviewer/c_overviewer.dylib
+overviewer_core/c_overviewer.so
+overviewer_core/c_overviewer.pyd
+overviewer_core/c_overviewer_d.pyd
+overviewer_core/c_overviewer.dylib
 
 # Mac OS X noise
 .DS_Store
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..f8e6fd7
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,7 @@
+include COPYING.txt
+include README.rst
+include overviewer.py
+recursive-include contrib/ *.py
+recursive-include overviewer_core/*.py
+recursive-include overviewer_core/src/ *.c *.h
+recursive-include overviewer_core/data/ *.png *.js index.html style.css
diff --git a/overviewer.py b/overviewer.py
index c7a84d7..e30b85c 100755
--- a/overviewer.py
+++ b/overviewer.py
@@ -32,15 +32,17 @@ logging.basicConfig(level=logging.INFO,format="%(asctime)s [%(levelname)s] %(mes
 
 # make sure the c_overviewer extension is available
 try:
-    import overviewer.c_overviewer as c_overviewer
+    from overviewer_core import c_overviewer
 except ImportError:
     print "You need to compile the c_overviewer module to run Minecraft Overviewer."
     print "Run `python setup.py build`, or see the README for details."
+    import traceback
+    traceback.print_exc()
     sys.exit(1)
 
-from overviewer.configParser import ConfigOptionParser
-from overviewer import optimizeimages, world, quadtree
-from overviewer import googlemap, rendernode, util
+from overviewer_core.configParser import ConfigOptionParser
+from overviewer_core import optimizeimages, world, quadtree
+from overviewer_core import googlemap, rendernode, util
 
 
 helptext = """
diff --git a/overviewer/__init__.py b/overviewer_core/__init__.py
similarity index 100%
rename from overviewer/__init__.py
rename to overviewer_core/__init__.py
diff --git a/overviewer/chunk.py b/overviewer_core/chunk.py
similarity index 100%
rename from overviewer/chunk.py
rename to overviewer_core/chunk.py
diff --git a/overviewer/composite.py b/overviewer_core/composite.py
similarity index 100%
rename from overviewer/composite.py
rename to overviewer_core/composite.py
diff --git a/overviewer/configParser.py b/overviewer_core/configParser.py
similarity index 100%
rename from overviewer/configParser.py
rename to overviewer_core/configParser.py
diff --git a/config.js b/overviewer_core/data/config.js
similarity index 100%
rename from config.js
rename to overviewer_core/data/config.js
diff --git a/textures/fire.png b/overviewer_core/data/textures/fire.png
similarity index 100%
rename from textures/fire.png
rename to overviewer_core/data/textures/fire.png
diff --git a/textures/lava.png b/overviewer_core/data/textures/lava.png
similarity index 100%
rename from textures/lava.png
rename to overviewer_core/data/textures/lava.png
diff --git a/textures/water.png b/overviewer_core/data/textures/water.png
similarity index 100%
rename from textures/water.png
rename to overviewer_core/data/textures/water.png
diff --git a/web_assets/compass.png b/overviewer_core/data/web_assets/compass.png
similarity index 100%
rename from web_assets/compass.png
rename to overviewer_core/data/web_assets/compass.png
diff --git a/web_assets/functions.js b/overviewer_core/data/web_assets/functions.js
similarity index 100%
rename from web_assets/functions.js
rename to overviewer_core/data/web_assets/functions.js
diff --git a/web_assets/index.html b/overviewer_core/data/web_assets/index.html
similarity index 100%
rename from web_assets/index.html
rename to overviewer_core/data/web_assets/index.html
diff --git a/web_assets/signpost-shadow.png b/overviewer_core/data/web_assets/signpost-shadow.png
similarity index 100%
rename from web_assets/signpost-shadow.png
rename to overviewer_core/data/web_assets/signpost-shadow.png
diff --git a/web_assets/signpost.png b/overviewer_core/data/web_assets/signpost.png
similarity index 100%
rename from web_assets/signpost.png
rename to overviewer_core/data/web_assets/signpost.png
diff --git a/web_assets/signpost_icon.png b/overviewer_core/data/web_assets/signpost_icon.png
similarity index 100%
rename from web_assets/signpost_icon.png
rename to overviewer_core/data/web_assets/signpost_icon.png
diff --git a/web_assets/style.css b/overviewer_core/data/web_assets/style.css
similarity index 100%
rename from web_assets/style.css
rename to overviewer_core/data/web_assets/style.css
diff --git a/overviewer/googlemap.py b/overviewer_core/googlemap.py
similarity index 100%
rename from overviewer/googlemap.py
rename to overviewer_core/googlemap.py
diff --git a/overviewer/nbt.py b/overviewer_core/nbt.py
similarity index 100%
rename from overviewer/nbt.py
rename to overviewer_core/nbt.py
diff --git a/overviewer/optimizeimages.py b/overviewer_core/optimizeimages.py
similarity index 100%
rename from overviewer/optimizeimages.py
rename to overviewer_core/optimizeimages.py
diff --git a/overviewer/quadtree.py b/overviewer_core/quadtree.py
similarity index 100%
rename from overviewer/quadtree.py
rename to overviewer_core/quadtree.py
diff --git a/overviewer/rendernode.py b/overviewer_core/rendernode.py
similarity index 100%
rename from overviewer/rendernode.py
rename to overviewer_core/rendernode.py
diff --git a/overviewer/src/composite.c b/overviewer_core/src/composite.c
similarity index 100%
rename from overviewer/src/composite.c
rename to overviewer_core/src/composite.c
diff --git a/overviewer/src/endian.c b/overviewer_core/src/endian.c
similarity index 100%
rename from overviewer/src/endian.c
rename to overviewer_core/src/endian.c
diff --git a/overviewer/src/iterate.c b/overviewer_core/src/iterate.c
similarity index 99%
rename from overviewer/src/iterate.c
rename to overviewer_core/src/iterate.c
index 4cf63c1..6f944de 100644
--- a/overviewer/src/iterate.c
+++ b/overviewer_core/src/iterate.c
@@ -31,7 +31,7 @@ int init_chunk_render(void) {
      * */
     if (blockmap) return 1;
 
-    textures = PyImport_ImportModule("overviewer.textures");
+    textures = PyImport_ImportModule("overviewer_core.textures");
     /* ensure none of these pointers are NULL */    
     if ((!textures)) {
         fprintf(stderr, "\ninit_chunk_render failed to load; textures\n");
@@ -39,7 +39,7 @@ int init_chunk_render(void) {
         return 1;
     }
 
-    chunk_mod = PyImport_ImportModule("overviewer.chunk");
+    chunk_mod = PyImport_ImportModule("overviewer_core.chunk");
     /* ensure none of these pointers are NULL */    
     if ((!chunk_mod)) {
         fprintf(stderr, "\ninit_chunk_render failed to load; chunk\n");
diff --git a/overviewer/src/main.c b/overviewer_core/src/main.c
similarity index 100%
rename from overviewer/src/main.c
rename to overviewer_core/src/main.c
diff --git a/overviewer/src/overviewer.h b/overviewer_core/src/overviewer.h
similarity index 100%
rename from overviewer/src/overviewer.h
rename to overviewer_core/src/overviewer.h
diff --git a/overviewer/src/rendermode-lighting.c b/overviewer_core/src/rendermode-lighting.c
similarity index 100%
rename from overviewer/src/rendermode-lighting.c
rename to overviewer_core/src/rendermode-lighting.c
diff --git a/overviewer/src/rendermode-night.c b/overviewer_core/src/rendermode-night.c
similarity index 100%
rename from overviewer/src/rendermode-night.c
rename to overviewer_core/src/rendermode-night.c
diff --git a/overviewer/src/rendermode-normal.c b/overviewer_core/src/rendermode-normal.c
similarity index 100%
rename from overviewer/src/rendermode-normal.c
rename to overviewer_core/src/rendermode-normal.c
diff --git a/overviewer/src/rendermode-spawn.c b/overviewer_core/src/rendermode-spawn.c
similarity index 100%
rename from overviewer/src/rendermode-spawn.c
rename to overviewer_core/src/rendermode-spawn.c
diff --git a/overviewer/src/rendermodes.c b/overviewer_core/src/rendermodes.c
similarity index 100%
rename from overviewer/src/rendermodes.c
rename to overviewer_core/src/rendermodes.c
diff --git a/overviewer/src/rendermodes.h b/overviewer_core/src/rendermodes.h
similarity index 100%
rename from overviewer/src/rendermodes.h
rename to overviewer_core/src/rendermodes.h
diff --git a/overviewer/textures.py b/overviewer_core/textures.py
similarity index 100%
rename from overviewer/textures.py
rename to overviewer_core/textures.py
diff --git a/overviewer/util.py b/overviewer_core/util.py
similarity index 93%
rename from overviewer/util.py
rename to overviewer_core/util.py
index 12d21fd..a1d07f8 100644
--- a/overviewer/util.py
+++ b/overviewer_core/util.py
@@ -28,7 +28,8 @@ def get_program_path():
     else:
         try:
             # normally, we're in ./overviewer/util.py
-            return os.path.dirname(os.path.dirname(__file__))
+            # we want ./overviewer/data/
+            return os.path.join(os.path.dirname(__file__), 'data')
         except NameError:
             return os.path.dirname(sys.argv[0])
 
diff --git a/overviewer/world.py b/overviewer_core/world.py
similarity index 100%
rename from overviewer/world.py
rename to overviewer_core/world.py
diff --git a/setup.py b/setup.py
old mode 100644
new mode 100755
index 759efba..1f34f3f
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,5 @@
+#!/usr/bin/python
+
 from distutils.core import setup, Extension
 from distutils.command.build import build
 from distutils.command.clean import clean
@@ -17,32 +19,41 @@ except ImportError:
 # now, setup the keyword arguments for setup
 # (because we don't know until runtime if py2exe is available)
 setup_kwargs = {}
-setup_kwargs['options'] = {}
 setup_kwargs['ext_modules'] = []
 setup_kwargs['cmdclass'] = {}
 
+#
+# metadata
+#
+
+setup_kwargs['name'] = 'minecraft-overviewer'
+setup_kwargs['version'] = '0.0.0' # TODO useful version
+
 #
 # py2exe options
 #
 
 if py2exe is not None:
     setup_kwargs['console'] = ['overviewer.py']
+    setup_kwargs['data_files'] = [('', ['COPYING.txt', 'README.rst'])]
     setup_kwargs['zipfile'] = None
     if platform.system() == 'Windows' and '64bit' in platform.architecture():
         b = 3
     else:
         b = 1
+    setup_kwargs['options'] = {}
     setup_kwargs['options']['py2exe'] = {'bundle_files' : b, 'excludes': 'Tkinter'}
 
 #
 # script, package, and data
 #
 
-setup_kwargs['packages'] = ['overviewer']
+setup_kwargs['packages'] = ['overviewer_core']
 setup_kwargs['scripts'] = ['overviewer.py']
-setup_kwargs['data_files'] = [('textures', glob.glob('textures/*')),
-                              ('', ['config.js', 'COPYING.txt', 'README.rst']),
-                              ('web_assets', glob.glob('web_assets/*'))]
+setup_kwargs['package_data'] = {'overviewer_core':
+                                    ['data/config.js',
+                                     'data/textures/*',
+                                     'data/web_assets/*']}
 
 
 #
@@ -58,15 +69,14 @@ except AttributeError:
     numpy_include = numpy.get_numpy_include()
 
 
-c_overviewer_files = ['overviewer/src/main.c', 'overviewer/src/composite.c', 'overviewer/src/iterate.c', 'overviewer/src/endian.c']
-c_overviewer_files += ['overviewer/src/rendermodes.c', 'overviewer/src/rendermode-normal.c', 'overviewer/src/rendermode-lighting.c', 'overviewer/src/rendermode-night.c', 'overviewer/src/rendermode-spawn.c']
-c_overviewer_includes = ['overviewer/src/overviewer.h', 'overviewer/src/rendermodes.h']
-setup_kwargs['ext_modules'].append(Extension('overviewer.c_overviewer', c_overviewer_files, include_dirs=['.', numpy_include], depends=c_overviewer_includes, extra_link_args=[]))
-# tell build_ext to build the extension in-place
-# (NOT in build/)
-setup_kwargs['options']['build_ext'] = {'inplace' : 1}
-# tell the build command to only run build_ext
-build.sub_commands = [('build_ext', None)]
+c_overviewer_files = ['main.c', 'composite.c', 'iterate.c', 'endian.c']
+c_overviewer_files += ['rendermodes.c', 'rendermode-normal.c', 'rendermode-lighting.c', 'rendermode-night.c', 'rendermode-spawn.c']
+c_overviewer_includes = ['overviewer.h', 'rendermodes.h']
+
+c_overviewer_files = map(lambda s: 'overviewer_core/src/'+s, c_overviewer_files)
+c_overviewer_includes = map(lambda s: 'overviewer_core/src/'+s, c_overviewer_includes)
+
+setup_kwargs['ext_modules'].append(Extension('overviewer_core.c_overviewer', c_overviewer_files, include_dirs=['.', numpy_include], depends=c_overviewer_includes, extra_link_args=[]))
 
 # custom clean command to remove in-place extension
 class CustomClean(clean):
@@ -77,7 +87,7 @@ class CustomClean(clean):
         # try to remove '_composite.{so,pyd,...}' extension,
         # regardless of the current system's extension name convention
         build_ext = self.get_finalized_command('build_ext')
-        pretty_fname = build_ext.get_ext_filename('overviewer.c_overviewer')
+        pretty_fname = build_ext.get_ext_filename('overviewer_core.c_overviewer')
         fname = pretty_fname
         if os.path.exists(fname):
             try:
@@ -99,6 +109,10 @@ class CustomBuild(build_ext):
             for e in self.extensions:
                 e.extra_link_args.append("/MANIFEST")
 
+        # build in place, and in the build/ tree
+        self.inplace = False
+        build_ext.build_extensions(self)
+        self.inplace = True
         build_ext.build_extensions(self)