diff --git a/doc/demo01_hello/hello.md b/doc/demo01_hello/hello.md
index fc328f4..465dae2 100644
--- a/doc/demo01_hello/hello.md
+++ b/doc/demo01_hello/hello.md
@@ -25,7 +25,7 @@ ue虽然开源源代码，但是代码量太大，历史包袱太重，不适合
 ```
 
 - 自己能够本地编译godot源代码，成就感爆棚
-- unity用多了，你会感觉自己就是个脚本小子
+-  
 
 ```
 使用godot你既可以用GDScript去编写代码，也可以用C++去编写代码，还可以去改底层引擎代码
diff --git a/doc/demo10_animation/animation.md b/doc/demo10_animation/animation.md
index b9d55ba..96fe101 100644
--- a/doc/demo10_animation/animation.md
+++ b/doc/demo10_animation/animation.md
@@ -13,3 +13,7 @@
 
 - AnimationPlayer是时间和属性的变化，是一种动画的表现
 - AnimatedSprite是序列帧的简便的用法
+
+![Image text](image/animated1.png)
+![Image text](image/animated2.png)
+![Image text](image/animated3.png)
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diff --git a/doc/demo15_audio/audio.md b/doc/demo15_audio/audio.md
new file mode 100644
index 0000000..6844773
--- /dev/null
+++ b/doc/demo15_audio/audio.md
@@ -0,0 +1,21 @@
+![Image text](image/audio1.png)
+![Image text](image/audio2.png)
+![Image text](image/audio3.png)
+![Image text](image/audio4.png)
+![Image text](image/audio5.png)
+![Image text](image/audio6.png)
+![Image text](image/audio7.png)
+![Image text](image/audio8.png)
+![Image text](image/audio9.png)
+![Image text](image/audio10.png)
+![Image text](image/audio11.png)
+![Image text](image/audio12.png)
+![Image text](image/audio13.png)
+![Image text](image/audio14.png)
+![Image text](image/audio15.png)
+![Image text](image/audio16.png)
+![Image text](image/audio17.png)
+![Image text](image/audio18.png)
+![Image text](image/audio19.png)
+![Image text](image/audio21.png)
+![Image text](image/audio22.png)
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new file mode 100644
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new file mode 100644
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+}
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+dest_files=[ "res://.import/audio22.png-955c3c33b49d6f81e6c0ef315b91796e.stex" ]
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+[params]
+
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index 0000000..b4cebd0
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+[remap]
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+importer="texture"
+type="StreamTexture"
+path="res://.import/audio3.png-115f8d04818f07e03048c58a0e8dfa12.stex"
+metadata={
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+}
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+[deps]
+
+source_file="res://doc/demo15_audio/image/audio3.png"
+dest_files=[ "res://.import/audio3.png-115f8d04818f07e03048c58a0e8dfa12.stex" ]
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+[params]
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+compress/mode=0
+compress/lossy_quality=0.7
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+importer="texture"
+type="StreamTexture"
+path="res://.import/audio4.png-98aed9a01e43478144a19c862e2b704f.stex"
+metadata={
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+}
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+[deps]
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+source_file="res://doc/demo15_audio/image/audio4.png"
+dest_files=[ "res://.import/audio4.png-98aed9a01e43478144a19c862e2b704f.stex" ]
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+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
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+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
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diff --git a/doc/demo15_audio/image/audio5.png b/doc/demo15_audio/image/audio5.png
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index 0000000..47341e3
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diff --git a/doc/demo15_audio/image/audio5.png.import b/doc/demo15_audio/image/audio5.png.import
new file mode 100644
index 0000000..35685ac
--- /dev/null
+++ b/doc/demo15_audio/image/audio5.png.import
@@ -0,0 +1,34 @@
+[remap]
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+importer="texture"
+type="StreamTexture"
+path="res://.import/audio5.png-b66b6ad73b9f2c4254c6c9f3f549134e.stex"
+metadata={
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+}
+
+[deps]
+
+source_file="res://doc/demo15_audio/image/audio5.png"
+dest_files=[ "res://.import/audio5.png-b66b6ad73b9f2c4254c6c9f3f549134e.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
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+flags/mipmaps=false
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+process/fix_alpha_border=true
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diff --git a/doc/demo15_audio/image/audio6.png b/doc/demo15_audio/image/audio6.png
new file mode 100644
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Binary files /dev/null and b/doc/demo15_audio/image/audio6.png differ
diff --git a/doc/demo15_audio/image/audio6.png.import b/doc/demo15_audio/image/audio6.png.import
new file mode 100644
index 0000000..bc0bddf
--- /dev/null
+++ b/doc/demo15_audio/image/audio6.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/audio6.png-8cbfed7c6cd873e4186ee81bce0bee52.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://doc/demo15_audio/image/audio6.png"
+dest_files=[ "res://.import/audio6.png-8cbfed7c6cd873e4186ee81bce0bee52.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
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+flags/repeat=0
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+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
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diff --git a/doc/demo15_audio/image/audio7.png b/doc/demo15_audio/image/audio7.png
new file mode 100644
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Binary files /dev/null and b/doc/demo15_audio/image/audio7.png differ
diff --git a/doc/demo15_audio/image/audio7.png.import b/doc/demo15_audio/image/audio7.png.import
new file mode 100644
index 0000000..9db23b9
--- /dev/null
+++ b/doc/demo15_audio/image/audio7.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/audio7.png-996bfbbffec2d8e992933ce9d03fc10d.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://doc/demo15_audio/image/audio7.png"
+dest_files=[ "res://.import/audio7.png-996bfbbffec2d8e992933ce9d03fc10d.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0
diff --git a/doc/demo15_audio/image/audio8.png b/doc/demo15_audio/image/audio8.png
new file mode 100644
index 0000000..1b04cbe
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diff --git a/doc/demo15_audio/image/audio8.png.import b/doc/demo15_audio/image/audio8.png.import
new file mode 100644
index 0000000..cedec04
--- /dev/null
+++ b/doc/demo15_audio/image/audio8.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/audio8.png-ea429c29d33fa38ad58836ea74dbebf5.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://doc/demo15_audio/image/audio8.png"
+dest_files=[ "res://.import/audio8.png-ea429c29d33fa38ad58836ea74dbebf5.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
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+flags/mipmaps=false
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+process/fix_alpha_border=true
+process/premult_alpha=false
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diff --git a/doc/demo15_audio/image/audio9.png b/doc/demo15_audio/image/audio9.png
new file mode 100644
index 0000000..8053688
Binary files /dev/null and b/doc/demo15_audio/image/audio9.png differ
diff --git a/doc/demo15_audio/image/audio9.png.import b/doc/demo15_audio/image/audio9.png.import
new file mode 100644
index 0000000..32252c8
--- /dev/null
+++ b/doc/demo15_audio/image/audio9.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/audio9.png-b8bcaf3bed55f819e2521f8bf7f6cdc2.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://doc/demo15_audio/image/audio9.png"
+dest_files=[ "res://.import/audio9.png-b8bcaf3bed55f819e2521f8bf7f6cdc2.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
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+process/invert_color=false
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+size_limit=0
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+svg/scale=1.0
diff --git a/scene/demo10_animation/animation.tscn b/scene/demo10_animation/animation.tscn
index f62ebc9..19c87e6 100644
--- a/scene/demo10_animation/animation.tscn
+++ b/scene/demo10_animation/animation.tscn
@@ -112,7 +112,7 @@ texture = ExtResource( 4 )
 [node name="Animation_3" type="Node2D" parent="."]
 
 [node name="icon" type="Sprite" parent="Animation_3"]
-position = Vector2( 317.477, 302.72 )
+position = Vector2( 966.209, 326.747 )
 texture = ExtResource( 4 )
 
 [node name="AnimationPlayer" type="AnimationPlayer" parent="Animation_3"]
@@ -126,7 +126,6 @@ position = Vector2( 319.802, 425.747 )
 scale = Vector2( 1.86179, 1.57452 )
 texture = ExtResource( 6 )
 hframes = 60
-frame = 5
 
 [node name="AnimationPlayer" type="AnimationPlayer" parent="Animation_4"]
 autoplay = "animation_2"
@@ -140,7 +139,7 @@ __meta__ = {
 
 [node name="AnimatedSprite" type="AnimatedSprite" parent="Animation_5"]
 frames = SubResource( 3 )
-frame = 7
+frame = 5
 playing = true
 
 [connection signal="timeout" from="Animation_1/Sprite/Timer" to="Animation_1/Sprite" method="_on_Timer_timeout"]
diff --git a/scene/demo15_audio/Follow Me - Andrew Langdon.mp4 b/scene/demo15_audio/Follow Me - Andrew Langdon.mp4
new file mode 100644
index 0000000..d2b1323
Binary files /dev/null and b/scene/demo15_audio/Follow Me - Andrew Langdon.mp4 differ
diff --git a/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3 b/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3
new file mode 100644
index 0000000..242b631
Binary files /dev/null and b/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3 differ
diff --git a/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3.import b/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3.import
new file mode 100644
index 0000000..e21f4b8
--- /dev/null
+++ b/scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3.import	
@@ -0,0 +1,15 @@
+[remap]
+
+importer="mp3"
+type="AudioStreamMP3"
+path="res://.import/Follow Me - Andrew Langdon.mp3-208cd3bb30a229567f90fba5350fdc21.mp3str"
+
+[deps]
+
+source_file="res://scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3"
+dest_files=[ "res://.import/Follow Me - Andrew Langdon.mp3-208cd3bb30a229567f90fba5350fdc21.mp3str" ]
+
+[params]
+
+loop=true
+loop_offset=0
diff --git a/scene/demo15_audio/audio1.tscn b/scene/demo15_audio/audio1.tscn
new file mode 100644
index 0000000..43710b9
--- /dev/null
+++ b/scene/demo15_audio/audio1.tscn
@@ -0,0 +1,9 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3" type="AudioStream" id=1]
+
+[node name="Node2D" type="Node2D"]
+
+[node name="AudioStreamPlayer" type="AudioStreamPlayer" parent="."]
+stream = ExtResource( 1 )
+autoplay = true
diff --git a/scene/demo15_audio/audio2.tscn b/scene/demo15_audio/audio2.tscn
new file mode 100644
index 0000000..b3c3f4d
--- /dev/null
+++ b/scene/demo15_audio/audio2.tscn
@@ -0,0 +1,35 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://scene/demo15_audio/audio/Follow Me - Andrew Langdon.mp3" type="AudioStream" id=1]
+
+[sub_resource type="Animation" id=1]
+resource_name = "music"
+length = 10.0
+loop = true
+tracks/0/type = "audio"
+tracks/0/path = NodePath("AudioStreamPlayer")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"clips": [ {
+"end_offset": 0.0,
+"start_offset": 12.0,
+"stream": ExtResource( 1 )
+}, {
+"end_offset": 0.0,
+"start_offset": 0.0,
+"stream": null
+} ],
+"times": PoolRealArray( 0, 10.1 )
+}
+
+[node name="Node2D" type="Node2D"]
+
+[node name="AudioStreamPlayer" type="AudioStreamPlayer" parent="."]
+stream = ExtResource( 1 )
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+autoplay = "music"
+anims/music = SubResource( 1 )
diff --git a/scene/demo_test/demo_test.tscn b/scene/demo_test/demo_test.tscn
index a7a625b..f882b8a 100644
--- a/scene/demo_test/demo_test.tscn
+++ b/scene/demo_test/demo_test.tscn
@@ -1,13 +1,6 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=2 format=2]
 
 [ext_resource path="res://script/demo_test/demoTest.gd" type="Script" id=1]
-[ext_resource path="res://icon.png" type="Texture" id=2]
 
 [node name="Node2D" type="Node2D"]
 script = ExtResource( 1 )
-
-[node name="icon" type="Sprite" parent="."]
-position = Vector2( 958.772, 540.059 )
-texture = ExtResource( 2 )
-
-[node name="Node2D" type="Node2D" parent="."]