diff --git a/demo/Preparation.jpg b/demo/Preparation.jpg
deleted file mode 100644
index 2dfe6d8..0000000
Binary files a/demo/Preparation.jpg and /dev/null differ
diff --git a/demo/Preparation.mp3 b/demo/Preparation.mp3
deleted file mode 100644
index c9df32a..0000000
Binary files a/demo/Preparation.mp3 and /dev/null differ
diff --git a/demo/index.html b/demo/index.html
index 9e9fd13..091a608 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -140,8 +140,8 @@
             music: {
                 title: 'Preparation',
                 author: 'Hans Zimmer/Richard Harvey',
-                url: 'Preparation.mp3',
-                pic: 'Preparation.jpg'
+                url: 'http://7xifn9.com1.z0.glb.clouddn.com/Preparation.mp3',
+                pic: 'http://7xifn9.com1.z0.glb.clouddn.com/Preparation.jpg'
             }
         });
         ap1.init();
@@ -152,8 +152,8 @@
             music: {
                 title: 'Preparation',
                 author: 'Hans Zimmer/Richard Harvey',
-                url: 'Preparation.mp3',
-                pic: 'Preparation.jpg'
+                url: 'http://7xifn9.com1.z0.glb.clouddn.com/Preparation.mp3',
+                pic: 'http://7xifn9.com1.z0.glb.clouddn.com/Preparation.jpg'
             }
         });
         ap2.init();
@@ -165,8 +165,8 @@
             music: {
                 title: '平凡之路',
                 author: '朴树',
-                url: '平凡之路.mp3',
-                pic: '平凡之路.jpg'
+                url: 'http://7xifn9.com1.z0.glb.clouddn.com/平凡之路.mp3',
+                pic: 'http://7xifn9.com1.z0.glb.clouddn.com/平凡之路.jpg'
             }
         });
         ap3.init();
diff --git a/demo/平凡之路.jpg b/demo/平凡之路.jpg
deleted file mode 100644
index ac262c5..0000000
Binary files a/demo/平凡之路.jpg and /dev/null differ
diff --git a/demo/平凡之路.mp3 b/demo/平凡之路.mp3
deleted file mode 100644
index fc7f7ee..0000000
Binary files a/demo/平凡之路.mp3 and /dev/null differ