diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d96974f
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+# Copyright (c) 2001-2013 James Tauber and contributors
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
\ No newline at end of file
diff --git a/README b/README.md
similarity index 73%
rename from README
rename to README.md
index 9bdd5d1..3406554 100644
--- a/README
+++ b/README.md
@@ -32,4 +32,17 @@ The only I/O supported is the keyboard and screen but 40-column text, LORES
 and HIRES graphics are all supported.
 
 ApplePy currently requires Pygame (although there is a minimal applepy_curses.py
-that uses curses to display text mode only).
\ No newline at end of file
+that uses curses to display text mode only) and numpy (just for an array for
+speaker sounds)
+
+Here's how I set up the dependencies (on Mac OS X 10.8):
+
+    pip install numpy
+    brew install sdl sdl_image sdl_mixer sdl_ttf portmidi hg
+    pip install hg+http://bitbucket.org/pygame/pygame
+
+
+License
+-------
+
+This code is made available under an MIT License. See LICENSE.
diff --git a/applepy.py b/applepy.py
old mode 100644
new mode 100755
index 87e8d60..fc8b977
--- a/applepy.py
+++ b/applepy.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # ApplePy - an Apple ][ emulator in Python
 # James Tauber / http://jtauber.com/
 # originally written 2001, updated 2011
@@ -232,20 +234,24 @@ class Display:
                             if xx % 2:
                                 pixels[x][y] = (0, 0, 0)
                                 # orange
+                                pixels[x][y] = (255, 192, 0) if c else (0, 0, 0)  # @@@
                                 pixels[x + 1][y] = (255, 192, 0) if c else (0, 0, 0)
                             else:
                                 # blue
                                 pixels[x][y] = (0, 192, 255) if c else (0, 0, 0)
                                 pixels[x + 1][y] = (0, 0, 0)
+                                pixels[x + 1][y] = (0, 192, 255) if c else (0, 0, 0)  # @@@
                         else:
                             if xx % 2:
                                 pixels[x][y] = (0, 0, 0)
                                 # green
+                                pixels[x][y] = (0, 255, 0) if c else (0, 0, 0)  # @@@
                                 pixels[x + 1][y] = (0, 255, 0) if c else (0, 0, 0)
                             else:
                                 # violet
                                 pixels[x][y] = (255, 0, 255) if c else (0, 0, 0)
                                 pixels[x + 1][y] = (0, 0, 0)
+                                pixels[x + 1][y] = (255, 0, 255) if c else (0, 0, 0)  # @@@
                                 
                         pixels[x][y + 1] = (0, 0, 0)
                         pixels[x + 1][y + 1] = (0, 0, 0)
@@ -267,15 +273,15 @@ class Speaker:
     CHECK_INTERVAL = 1000
     
     def __init__(self):
-        pygame.mixer.pre_init(44100, -16, 1)
+        pygame.mixer.pre_init(11025, -16, 1)
         pygame.init()
         self.reset()
     
     def toggle(self, cycle):
         if self.last_toggle is not None:
             l = (cycle - self.last_toggle) / Speaker.CPU_CYCLES_PER_SAMPLE
-            self.buffer.extend([0, 0.8] if self.polarity else [0, -0.8])
-            self.buffer.extend((l - 2) * [0.5] if self.polarity else [-0.5])
+            self.buffer.extend([0, 26000] if self.polarity else [0, -2600])
+            self.buffer.extend((l - 2) * [16384] if self.polarity else [-16384])
             self.polarity = not self.polarity
         self.last_toggle = cycle
     
@@ -285,7 +291,7 @@ class Speaker:
         self.polarity = False
     
     def play(self):
-        sample_array = numpy.array(self.buffer)
+        sample_array = numpy.int16(self.buffer)
         sound = pygame.sndarray.make_sound(sample_array)
         sound.play()
         self.reset()
@@ -532,7 +538,8 @@ class Apple2:
                     if key:
                         if key == 0x7F:
                             key = 0x08
-                        self.io.kbd = 0x80 + key
+
+                        self.io.kbd = 0x80 + (key & 0x7F)
             
             update_cycle += 1
             if update_cycle >= 1024: