diff --git a/min/builder/index.php b/min/builder/index.php
index 1b20982..bace9db 100644
--- a/min/builder/index.php
+++ b/min/builder/index.php
@@ -170,8 +170,12 @@ $serveOpts = array(
 ob_end_clean();
 
 set_include_path(dirname(__FILE__) . '/../lib' . PATH_SEPARATOR . get_include_path());
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
 
-require 'Minify.php';
+//require 'Minify.php';
 
 if (0 === stripos(PHP_OS, 'win')) {
     Minify::setDocRoot(); // we may be on IIS
diff --git a/min/groupsConfig.php b/min/groupsConfig.php
index 9e2514d..d6e7de1 100644
--- a/min/groupsConfig.php
+++ b/min/groupsConfig.php
@@ -31,4 +31,7 @@ return array(
             'minifier' => array('Minify_Packer', 'minify')
         ))
     ),//*/
+    
+    // testing
+    //'js' => array(dirname(__FILE__) . '/builder/_index.js'),
 );
\ No newline at end of file
diff --git a/min/index.php b/min/index.php
index df8db87..331f037 100644
--- a/min/index.php
+++ b/min/index.php
@@ -15,7 +15,11 @@ require MINIFY_MIN_DIR . '/config.php';
 // setup include path
 set_include_path($min_libPath . PATH_SEPARATOR . get_include_path());
 
-require $min_libPath . '/Minify.php';
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
+
 
 Minify::$uploaderHoursBehind = $min_uploaderHoursBehind;
 Minify::setCache(
@@ -37,9 +41,9 @@ if ($min_allowDebugFlag && isset($_GET['debug'])) {
 }
 
 if ($min_errorLogger) {
-    require_once $min_libPath . '/Minify/Logger.php';
+    //require_once $min_libPath . '/Minify/Logger.php';
     if (true === $min_errorLogger) {
-        require_once $min_libPath . '/FirePHP.php';
+        //require_once $min_libPath . '/FirePHP.php';
         Minify_Logger::setLogger(FirePHP::getInstance(true));
     } else {
         Minify_Logger::setLogger($min_errorLogger);
diff --git a/min/lib/Minify.php b/min/lib/Minify.php
index 2c0ca34..20f6d5a 100644
--- a/min/lib/Minify.php
+++ b/min/lib/Minify.php
@@ -4,11 +4,6 @@
  * @package Minify
  */
 
-/**
- * Minify_Source
- */
-require_once 'Minify/Source.php';
- 
 /**
  * Minify - Combines, minifies, and caches JavaScript and CSS files on demand.
  *
@@ -77,7 +72,6 @@ class Minify {
     public static function setCache($cache = '', $fileLocking = true)
     {
         if (is_string($cache)) {
-            require_once 'Minify/Cache/File.php';
             self::$_cache = new Minify_Cache_File($cache, $fileLocking);
         } else {
             self::$_cache = $cache;
@@ -162,10 +156,6 @@ class Minify {
         if (is_string($controller)) {
             // make $controller into object
             $class = 'Minify_Controller_' . $controller;
-            if (! class_exists($class, false)) {
-                require_once "Minify/Controller/" 
-                    . str_replace('_', '/', $controller) . ".php";    
-            }
             $controller = new $class();
         }
         
@@ -207,7 +197,6 @@ class Minify {
                 $contentEncoding = self::$_options['encodeMethod'];
             } else {
                 // sniff request header
-                require_once 'HTTP/Encoder.php';
                 // depending on what the client accepts, $contentEncoding may be 
                 // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
                 // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
@@ -218,7 +207,6 @@ class Minify {
         }
         
         // check client cache
-        require_once 'HTTP/ConditionalGet.php';
         $cgOptions = array(
             'lastModifiedTime' => self::$_options['lastModifiedTime']
             ,'isPublic' => self::$_options['isPublic']
@@ -376,7 +364,6 @@ class Minify {
             if ($unsetPathInfo) {
                 unset($_SERVER['PATH_INFO']);
             }
-            require_once 'Minify/Logger.php';
             Minify_Logger::log("setDocRoot() set DOCUMENT_ROOT to \"{$_SERVER['DOCUMENT_ROOT']}\"");
         }
     }
diff --git a/min/lib/Minify/CSS.php b/min/lib/Minify/CSS.php
index 2220cf2..6aaff59 100644
--- a/min/lib/Minify/CSS.php
+++ b/min/lib/Minify/CSS.php
@@ -50,12 +50,10 @@ class Minify_CSS {
      */
     public static function minify($css, $options = array()) 
     {
-        require_once 'Minify/CSS/Compressor.php';
         if (isset($options['preserveComments']) 
             && !$options['preserveComments']) {
             $css = Minify_CSS_Compressor::process($css, $options);
         } else {
-            require_once 'Minify/CommentPreserver.php';
             $css = Minify_CommentPreserver::process(
                 $css
                 ,array('Minify_CSS_Compressor', 'process')
@@ -65,7 +63,6 @@ class Minify_CSS {
         if (! isset($options['currentDir']) && ! isset($options['prependRelativePath'])) {
             return $css;
         }
-        require_once 'Minify/CSS/UriRewriter.php';
         if (isset($options['currentDir'])) {
             return Minify_CSS_UriRewriter::rewrite(
                 $css
diff --git a/min/lib/Minify/Cache/APC.php b/min/lib/Minify/Cache/APC.php
index ca84d29..dd51bcb 100644
--- a/min/lib/Minify/Cache/APC.php
+++ b/min/lib/Minify/Cache/APC.php
@@ -14,7 +14,7 @@
  * @package Minify
  * @author Chris Edwards
  **/
-class Minify_Cache_APC {
+class Minify_Cache_APC implements Minify_Cache_Interface {
 
     /**
      * Create a Minify_Cache_APC object, to be passed to
diff --git a/min/lib/Minify/Cache/File.php b/min/lib/Minify/Cache/File.php
index 8744a7e..6f4d74a 100644
--- a/min/lib/Minify/Cache/File.php
+++ b/min/lib/Minify/Cache/File.php
@@ -4,7 +4,7 @@
  * @package Minify
  */
 
-class Minify_Cache_File {
+class Minify_Cache_File implements Minify_Cache_Interface {
     
     public function __construct($path = '', $fileLocking = false)
     {
diff --git a/min/lib/Minify/Cache/Interface.php b/min/lib/Minify/Cache/Interface.php
new file mode 100644
index 0000000..89a1816
--- /dev/null
+++ b/min/lib/Minify/Cache/Interface.php
@@ -0,0 +1,59 @@
+<?php
+/**
+ * Class Minify_Cache_Interface
+ * @package Minify
+ */
+
+/**
+ * @package Minify
+ * @author Stephen Clay
+ **/
+interface Minify_Cache_Interface {
+
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     *
+     * @param string $data
+     *
+     * @return bool success
+     */
+    public function store($id, $data);
+
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     *
+     * @return int size in bytes
+     */
+    public function getSize($id);
+
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     *
+     * @param int $srcMtime mtime of the original source file(s)
+     *
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime);
+
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id);
+
+    /**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     *
+     * @return string
+     */
+    public function fetch($id);
+}
diff --git a/min/lib/Minify/Cache/Memcache.php b/min/lib/Minify/Cache/Memcache.php
index 2b81e7a..1f401ea 100644
--- a/min/lib/Minify/Cache/Memcache.php
+++ b/min/lib/Minify/Cache/Memcache.php
@@ -17,7 +17,7 @@
  * }
  * </code>
  **/
-class Minify_Cache_Memcache {
+class Minify_Cache_Memcache implements Minify_Cache_Interface {
     
     /**
      * Create a Minify_Cache_Memcache object, to be passed to 
diff --git a/min/lib/Minify/Controller/Base.php b/min/lib/Minify/Controller/Base.php
index 84889b3..7e467ea 100644
--- a/min/lib/Minify/Controller/Base.php
+++ b/min/lib/Minify/Controller/Base.php
@@ -96,12 +96,15 @@ abstract class Minify_Controller_Base {
      */
     public function loadMinifier($minifierCallback)
     {
-        if (is_array($minifierCallback)
+        // autoloading... may no longer be needed
+        
+        /*if (is_array($minifierCallback)
             && is_string($minifierCallback[0])
             && !class_exists($minifierCallback[0], false)) {
             
             require str_replace('_', '/', $minifierCallback[0]) . '.php';
         }
+        */
     }
     
     /**
@@ -196,7 +199,6 @@ abstract class Minify_Controller_Base {
      * @return null
      */
     protected function log($msg) {
-        require_once 'Minify/Logger.php';
         Minify_Logger::log($msg);
     }
 }
diff --git a/min/lib/Minify/Controller/MinApp.php b/min/lib/Minify/Controller/MinApp.php
index 44b32ce..5b1e499 100644
--- a/min/lib/Minify/Controller/MinApp.php
+++ b/min/lib/Minify/Controller/MinApp.php
@@ -4,8 +4,6 @@
  * @package Minify
  */
 
-require_once 'Minify/Controller/Base.php';
-
 /**
  * Controller class for requests to /min/index.php
  * 
diff --git a/min/lib/Minify/Controller/Page.php b/min/lib/Minify/Controller/Page.php
index 45aa172..494f260 100644
--- a/min/lib/Minify/Controller/Page.php
+++ b/min/lib/Minify/Controller/Page.php
@@ -4,8 +4,6 @@
  * @package Minify
  */
 
-require_once 'Minify/Controller/Base.php';
-
 /**
  * Controller class for serving a single HTML page
  * 
@@ -73,8 +71,10 @@ class Minify_Controller_Page extends Minify_Controller_Base {
         if ($this->_loadCssJsMinifiers) {
             // Minify will not call for these so we must manually load
             // them when Minify/HTML.php is called for.
-            require_once 'Minify/CSS.php';
-            require_once 'JSMin.php';
+            
+            // autoload
+            //require_once 'Minify/CSS.php';
+            //require_once 'JSMin.php';
         }
         parent::loadMinifier($minifierCallback); // load Minify/HTML.php
     }
diff --git a/min/lib/Minify/Controller/Version1.php b/min/lib/Minify/Controller/Version1.php
index 1861aab..a8de341 100644
--- a/min/lib/Minify/Controller/Version1.php
+++ b/min/lib/Minify/Controller/Version1.php
@@ -4,8 +4,6 @@
  * @package Minify
  */
 
-require_once 'Minify/Controller/Base.php';
-
 /**
  * Controller class for emulating version 1 of minify.php
  * 
diff --git a/min/lib/Minify/Lines.php b/min/lib/Minify/Lines.php
index 6f94fb6..50fe413 100644
--- a/min/lib/Minify/Lines.php
+++ b/min/lib/Minify/Lines.php
@@ -59,7 +59,6 @@ class Minify_Lines {
         
         // check for desired URI rewriting
         if (isset($options['currentDir'])) {
-            require_once 'Minify/CSS/UriRewriter.php';
             Minify_CSS_UriRewriter::$debugText = '';
             $content = Minify_CSS_UriRewriter::rewrite(
                  $content
diff --git a/min/pageBuffer.php b/min/pageBuffer.php
index f364adc..fb09705 100644
--- a/min/pageBuffer.php
+++ b/min/pageBuffer.php
@@ -9,6 +9,11 @@
 
 $_min_preIncludedFiles = get_included_files();
 
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
+
 function ob_minify_page($content) {
     global $min_serveOptions, $min_cacheMaxAge;
 
@@ -29,8 +34,6 @@ function ob_minify_page($content) {
     // setup include path
     set_include_path($min_libPath . PATH_SEPARATOR . get_include_path());
 
-    require $min_libPath . '/Minify.php';
-
     Minify::$uploaderHoursBehind = $min_uploaderHoursBehind;
     Minify::setCache(
         isset($min_cachePath) ? $min_cachePath : ''
@@ -38,9 +41,7 @@ function ob_minify_page($content) {
     );
 
     if ($min_errorLogger) {
-        require_once $min_libPath . '/Minify/Logger.php';
         if (true === $min_errorLogger) {
-            require_once $min_libPath . '/FirePHP.php';
             Minify_Logger::setLogger(FirePHP::getInstance(true));
         } else {
             Minify_Logger::setLogger($min_errorLogger);
diff --git a/min/utils.php b/min/utils.php
index c735941..5428560 100644
--- a/min/utils.php
+++ b/min/utils.php
@@ -7,8 +7,6 @@
  * @package Minify
  */
 
-require_once 'Minify/Build.php';
-
 
 /**
  * Get a timestamped URI to a minified resource using the default Minify install
diff --git a/min_extras/ab_tests/minify/test_Files.php b/min_extras/ab_tests/minify/test_Files.php
index 3fe0737..2371c2e 100644
--- a/min_extras/ab_tests/minify/test_Files.php
+++ b/min_extras/ab_tests/minify/test_Files.php
@@ -2,8 +2,6 @@
 
 require '../../config.php';
 
-require 'Minify.php';
-
 // set in /min/config.php
 Minify::setCache($minifyCachePath);
 
diff --git a/min_extras/ab_tests/minify/test_Files_Memcache.php b/min_extras/ab_tests/minify/test_Files_Memcache.php
index d96d30f..a38ad39 100644
--- a/min_extras/ab_tests/minify/test_Files_Memcache.php
+++ b/min_extras/ab_tests/minify/test_Files_Memcache.php
@@ -2,8 +2,6 @@
 
 require '../../config.php';
 
-require 'Minify.php';
-require 'Minify/Cache/Memcache.php';
 
 $mc = new Memcache;
 if (! @$mc->connect('localhost', 11211)) {
diff --git a/min_extras/ab_tests/minify/test_Groups.php b/min_extras/ab_tests/minify/test_Groups.php
index 3158d46..863ef82 100644
--- a/min_extras/ab_tests/minify/test_Groups.php
+++ b/min_extras/ab_tests/minify/test_Groups.php
@@ -2,8 +2,6 @@
 
 require '../../config.php';
 
-require 'Minify.php';
-
 // set in /min/config.php
 Minify::setCache($minifyCachePath);
 
diff --git a/min_extras/ab_tests/minify/test_Version1.php b/min_extras/ab_tests/minify/test_Version1.php
index c572bb2..4d3baf1 100644
--- a/min_extras/ab_tests/minify/test_Version1.php
+++ b/min_extras/ab_tests/minify/test_Version1.php
@@ -8,6 +8,4 @@ define('MINIFY_BASE_DIR', realpath(
 // set in /min/config.php
 define('MINIFY_CACHE_DIR', $minifyCachePath);
 
-require 'Minify.php';
-
 Minify::serve('Version1');
diff --git a/min_extras/config.php b/min_extras/config.php
index 6b4959a..459fc32 100644
--- a/min_extras/config.php
+++ b/min_extras/config.php
@@ -9,3 +9,8 @@ set_include_path($min_libPath . PATH_SEPARATOR . get_include_path());
 $minifyCachePath = isset($min_cachePath) 
     ? $min_cachePath 
     : '';
+
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
diff --git a/min_extras/examples/1/index.php b/min_extras/examples/1/index.php
index 27ae19c..33f113d 100644
--- a/min_extras/examples/1/index.php
+++ b/min_extras/examples/1/index.php
@@ -2,7 +2,6 @@
 require '../../config.php';
 require '_groupsSources.php';
 
-require 'Minify/Build.php';
 $jsBuild = new Minify_Build($groupsSources['js']);
 $cssBuild = new Minify_Build($groupsSources['css']);
 ?>
diff --git a/min_extras/examples/1/m.php b/min_extras/examples/1/m.php
index 84c8277..922aa03 100644
--- a/min_extras/examples/1/m.php
+++ b/min_extras/examples/1/m.php
@@ -2,7 +2,6 @@
 
 require '../../config.php';
 require '_groupsSources.php';
-require 'Minify.php';
 
 if ($minifyCachePath) {
     Minify::setCache($minifyCachePath);
diff --git a/min_extras/examples/2/index.php b/min_extras/examples/2/index.php
index 5fdcda5..31a8fc1 100644
--- a/min_extras/examples/2/index.php
+++ b/min_extras/examples/2/index.php
@@ -2,7 +2,6 @@
 require '../../config.php';
 require '_groupsSources.php';
 
-require 'Minify/Build.php';
 $jsBuild = new Minify_Build($groupsSources['js']);
 $cssBuild = new Minify_Build($groupsSources['css']);
 
@@ -73,8 +72,6 @@ window.onload = function () {
 <?php
 $content = ob_get_clean();
 
-require 'Minify.php';
-
 if ($minifyCachePath) {
     Minify::useServerCache($minifyCachePath);
 }
diff --git a/min_extras/examples/2/m.php b/min_extras/examples/2/m.php
index 84c8277..922aa03 100644
--- a/min_extras/examples/2/m.php
+++ b/min_extras/examples/2/m.php
@@ -2,7 +2,6 @@
 
 require '../../config.php';
 require '_groupsSources.php';
-require 'Minify.php';
 
 if ($minifyCachePath) {
     Minify::setCache($minifyCachePath);
diff --git a/min_extras/tools/encodeFile.php b/min_extras/tools/encodeFile.php
index 6d0992d..3aad3dd 100644
--- a/min_extras/tools/encodeFile.php
+++ b/min_extras/tools/encodeFile.php
@@ -4,7 +4,6 @@ if (isset($_FILES['subject']['name'])) {
 
     require '../config.php';
     
-    require 'HTTP/Encoder.php';
     $he = new HTTP_Encoder(array(
         'content' => file_get_contents($_FILES['subject']['tmp_name'])
         ,'method' => $_POST['method']
diff --git a/min_extras/tools/minifyFile.php b/min_extras/tools/minifyFile.php
index 3b4e691..363f741 100644
--- a/min_extras/tools/minifyFile.php
+++ b/min_extras/tools/minifyFile.php
@@ -5,11 +5,6 @@ if (isset($_FILES['subject']['name'])
 ) {
     require '../config.php';
     
-    // easier to just require them all
-    require 'Minify/HTML.php';
-    require 'Minify/CSS.php';
-    require 'JSMin.php';
-    
     $arg2 = null;
     switch ($m[1]) {
     case 'js':
diff --git a/min_extras/tools/minifyTextarea.php b/min_extras/tools/minifyTextarea.php
index 110b463..2c830ed 100644
--- a/min_extras/tools/minifyTextarea.php
+++ b/min_extras/tools/minifyTextarea.php
@@ -12,7 +12,6 @@ if (isset($_POST['textIn'])) {
 }
 
 if (isset($_POST['method']) && $_POST['method'] === 'Minify and serve') {
-    require 'Minify.php';
     
     $base = trim(getPost('base'));
     if ($base) {
@@ -27,15 +26,11 @@ if (isset($_POST['method']) && $_POST['method'] === 'Minify and serve') {
     $sourceSpec['id'] = 'foo';
     if (isset($_POST['minJs'])) {
         $sourceSpec['minifyOptions']['jsMinifier'] = array('JSMin', 'minify');
-        require 'JSMin.php';
     }
     if (isset($_POST['minCss'])) {
         $sourceSpec['minifyOptions']['cssMinifier'] = array('Minify_CSS', 'minify');
-        require 'Minify/CSS.php';
     }
     $source = new Minify_Source($sourceSpec);
-    require_once 'Minify/Logger.php';
-    require_once 'FirePHP.php';
     Minify_Logger::setLogger(FirePHP::getInstance(true));
     Minify::serve('Files', array(
         'files' => $source
@@ -47,11 +42,6 @@ if (isset($_POST['method']) && $_POST['method'] === 'Minify and serve') {
 $classes = array('Minify_HTML', 'Minify_CSS', 'JSMin', 'JSMinPlus');
 
 if (isset($_POST['method']) && in_array($_POST['method'], $classes)) {
-    // easier to just require them all
-    require 'Minify/HTML.php';
-    require 'Minify/CSS.php';
-    require 'JSMin.php';
-    require 'JSMinPlus.php';
 
     $arg2 = null;
     if ($_POST['method'] === 'Minify_HTML') {
diff --git a/min_extras/tools/minifyUrl.php b/min_extras/tools/minifyUrl.php
index dd6cd7b..df1cac6 100644
--- a/min_extras/tools/minifyUrl.php
+++ b/min_extras/tools/minifyUrl.php
@@ -79,11 +79,6 @@ if (isset($_POST['url'])) {
         die('Unrecognized Content-Type: ' . $type['sent']);
     }
         
-    require 'Minify.php';
-    require 'Minify/HTML.php';
-    require 'Minify/CSS.php';
-    require 'JSMin.php';
-    
     if ($type['minify'] === 'text/html' 
         && isset($_POST['addBase'])
         && ! preg_match('@<base\\b@i', $content)) {
@@ -100,11 +95,9 @@ if (isset($_POST['url'])) {
     if ($type['minify'] === 'text/html') {
         if (isset($_POST['minJs'])) {
             $sourceSpec['minifyOptions']['jsMinifier'] = array('JSMin', 'minify');
-            require 'JSMin.php';
         }
         if (isset($_POST['minCss'])) {
             $sourceSpec['minifyOptions']['cssMinifier'] = array('Minify_CSS', 'minify');
-            require 'Minify/CSS.php';
         }
     }
        
diff --git a/min_extras/tools/testRewriteUri.php b/min_extras/tools/testRewriteUri.php
index 9cc917f..b40d9d8 100644
--- a/min_extras/tools/testRewriteUri.php
+++ b/min_extras/tools/testRewriteUri.php
@@ -33,7 +33,6 @@ $out = '';
 
 if (isset($_POST['css'])) {
     require '../config.php';
-    require 'Minify/CSS/UriRewriter.php';
     $symlinks = array();
     if ('' !== ($target = getPost('symTarget'))) {
         $symlinks[getPost('symLink')] = $target;
diff --git a/min_unit_tests/_inc.php b/min_unit_tests/_inc.php
index bf416d4..93caf8a 100644
--- a/min_unit_tests/_inc.php
+++ b/min_unit_tests/_inc.php
@@ -3,6 +3,11 @@
 require dirname(__FILE__) . '/../min/config.php';
 
 set_include_path($min_libPath . PATH_SEPARATOR . get_include_path());
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
+
 
 // set cache path and doc root if configured
 $minifyCachePath = isset($min_cachePath) 
@@ -13,11 +18,9 @@ if ($min_documentRoot) {
 }
 
 // default log to FirePHP
-require_once 'Minify/Logger.php';
 if ($min_errorLogger && true !== $min_errorLogger) { // custom logger
     Minify_Logger::setLogger($min_errorLogger);
 } else {
-    require_once 'FirePHP.php';
     Minify_Logger::setLogger(FirePHP::getInstance(true));
 }
 
diff --git a/mincache/gen.php b/mincache/gen.php
index 04f6b3a..a074965 100644
--- a/mincache/gen.php
+++ b/mincache/gen.php
@@ -39,8 +39,10 @@ require MINCACHE_DIR   . '/config.php';
 
 // setup include path
 set_include_path($min_libPath . PATH_SEPARATOR . get_include_path());
-
-require 'Minify.php';
+function min_autoload($name) {
+    require str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+}
+spl_autoload_register('min_autoload');
 
 if ($min_documentRoot) {
     $_SERVER['DOCUMENT_ROOT'] = $min_documentRoot;