diff --git a/generate-hrir-base64.js b/generate-hrir-base64.js
index 7c99f6d..3d4efa4 100644
--- a/generate-hrir-base64.js
+++ b/generate-hrir-base64.js
@@ -1,3 +1,18 @@
+/**
+ * Copyright 2017 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 const fs = require('fs');
 
 const FOAHrirData = {
diff --git a/package.json b/package.json
index b153ee0..2f7079c 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "scripts": {
     "build": "webpack --progress --color",
     "build-all": "webpack --progress --color && webpack --config webpack.config.all.js --progress --color",
-    "build-hrir": "./build-hrir.sh && node generate-hrir-base64.js",
+    "build-hrir": "./generate-hrir-wave.sh && node generate-hrir-base64.js",
     "build-doc": "node_modules/.bin/jsdoc src/omnitone.js -d doc/",
     "eslint": "./node_modules/.bin/eslint src/*",
     "test": "node_modules/karma/bin/karma start",
diff --git a/webpack.config.all.js b/webpack.config.all.js
index 4f8f20a..62bec4f 100644
--- a/webpack.config.all.js
+++ b/webpack.config.all.js
@@ -39,6 +39,7 @@ module.exports = {
   },
   plugins: [
     new UglifyJSPlugin({
+      sourceMap: true,
       uglifyOptions: {
         mangle: {
           // To address the 'let' bug in Safari 10. See: