diff --git a/setup.py b/setup.py
index cee767d..72cff78 100644
--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,8 @@ setup(name='sloth',
       description='The Sloth Labeling Tool',
       author='CV:HCI Research Group',
       url='http://cvhci.anthropomatik.kit.edu',
+      requires=['importlib', 'okapy'],
       packages=packages,
       data_files=data_files,
-      scripts=['sloth/bin/labeltool.py']
+      scripts=['sloth/bin/sloth']
 )
diff --git a/sloth/__init__.py b/sloth/__init__.py
index e69de29..2e47f9e 100644
--- a/sloth/__init__.py
+++ b/sloth/__init__.py
@@ -0,0 +1,5 @@
+APP_NAME            = """labeltool"""
+ORGANIZATION_NAME   = """CV:HCI Research Group"""
+ORGANIZATION_DOMAIN = """cvhci.anthropomatik.kit.edu"""
+VERSION             = """0.1"""
+
diff --git a/sloth/bin/sloth b/sloth/bin/sloth
new file mode 100755
index 0000000..0659abc
--- /dev/null
+++ b/sloth/bin/sloth
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+import sys
+from PyQt4.QtGui import QApplication
+from sloth.gui import MainWindow
+from sloth import APP_NAME, ORGANIZATION_NAME, ORGANIZATION_DOMAIN
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    app.setOrganizationName(ORGANIZATION_NAME)
+    app.setOrganizationDomain(ORGANIZATION_DOMAIN)
+    app.setApplicationName(APP_NAME)
+
+    wnd = MainWindow(sys.argv[1:])
+    wnd.show()
+
+    sys.exit(app.exec_())
+
diff --git a/sloth/gui/__init__.py b/sloth/gui/__init__.py
index e69de29..57f0e8f 100644
--- a/sloth/gui/__init__.py
+++ b/sloth/gui/__init__.py
@@ -0,0 +1 @@
+from labeltool import MainWindow
diff --git a/sloth/bin/labeltool.py b/sloth/gui/labeltool.py
similarity index 94%
rename from sloth/bin/labeltool.py
rename to sloth/gui/labeltool.py
index d22f7ee..a114322 100755
--- a/sloth/bin/labeltool.py
+++ b/sloth/gui/labeltool.py
@@ -1,8 +1,5 @@
 #!/usr/bin/python
 import sys, os
-INSTALLDIR=os.path.join(os.path.dirname(__file__), '../gui')
-sys.path.append(INSTALLDIR)
-
 import functools, importlib
 from optparse import OptionParser
 from PyQt4.QtGui import *
@@ -15,11 +12,9 @@ from sloth.annotations.container import AnnotationContainerFactory, AnnotationCo
 from sloth.gui.annotationscene import *
 from sloth.gui.frameviewer import *
 from sloth.conf import config
+from sloth import APP_NAME, ORGANIZATION_NAME, ORGANIZATION_DOMAIN, VERSION
 
-APP_NAME            = """labeltool"""
-ORGANIZATION_NAME   = """CV:HCI Research Group"""
-ORGANIZATION_DOMAIN = """cvhci.anthropomatik.kit.edu"""
-__version__         = """0.1"""
+GUIDIR=os.path.join(os.path.dirname(__file__))
 
 class MainWindow(QMainWindow):
     def __init__(self, argv, parent=None):
@@ -51,7 +46,7 @@ class MainWindow(QMainWindow):
 
     def parseCommandLineOptions(self, argv):
         usage   = "Usage: %prog [-c config.py] [annotation_file]"
-        version = "%prog " + __version__
+        version = "%prog " + VERSION
 
         parser = OptionParser(usage=usage, version=version)
         parser.add_option("-c", "--config",  action="store", type="string", default="",   help="Configuration file.")
@@ -82,7 +77,7 @@ class MainWindow(QMainWindow):
     ### GUI/Application setup
     ###___________________________________________________________________________________________
     def setupGui(self):
-        self.ui = uic.loadUi(os.path.join(INSTALLDIR, "labeltool.ui"), self)
+        self.ui = uic.loadUi(os.path.join(GUIDIR, "labeltool.ui"), self)
 
         self.scene = AnnotationScene(items=config.ITEMS, inserters=config.INSERTERS)
         self.view = GraphicsView(self)
@@ -308,17 +303,4 @@ class MainWindow(QMainWindow):
              <p>For more details, visit our homepage: <a href="%s">%s</a>"""
               % (APP_NAME, __version__, ORGANIZATION_DOMAIN, ORGANIZATION_DOMAIN))
 
-def main():
-    app = QApplication(sys.argv)
-    app.setOrganizationName(ORGANIZATION_NAME)
-    app.setOrganizationDomain(ORGANIZATION_DOMAIN)
-    app.setApplicationName(APP_NAME)
-
-    wnd = MainWindow(sys.argv[1:])
-    wnd.show()
-
-    return app.exec_()
-
-if __name__ == '__main__':
-    sys.exit(main())