diff --git a/_docs/index.tmpl.html b/_docs/index.tmpl.html
index c5fdb7698..472f81dd9 100644
--- a/_docs/index.tmpl.html
+++ b/_docs/index.tmpl.html
@@ -21,8 +21,9 @@ pre {
   padding: 1em;
 }
 </style>
+<a href="https://github.com/hajimehoshi/ebiten"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/365986a132ccd6a44c23a9169022c0b5c890c387/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f7265645f6161303030302e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_red_aa0000.png"></a>
 <h1>Ebiten (海老天)</h1>
-<p>v{{.StableVersion}}</p>
+<p>Stable version: v{{.StableVersion}} / Development version: v{{.DevVersion}}</p>
 <ul>
   <li>A simple SNES-like 2D game library in Go</li>
   <li>Works on
@@ -38,7 +39,6 @@ pre {
     </ul>
   </li>
   <li><a href="http://godoc.org/github.com/hajimehoshi/ebiten"><img src="https://godoc.org/github.com/hajimehoshi/ebiten?status.svg" alt="GoDoc Reference"></a></li>
-  <li><a href="http://github.com/hajimehoshi/ebiten">GitHub project page</a> (Development version: v{{.DevVersion}})</li>
 </ul>
 
 <h2>Features</h2>
@@ -109,16 +109,17 @@ pre {
           <li>Linux</li>
         </ul>
       </li>
-      <li>Drawing
+      <li>Graphics
         <ul>
           <li>Added CompositeMode to change composite mode (e.g. masking or additive drawing)</li>
         </ul>
       </li>
-      <li>Audio
+      <li><a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio">Audio</a>
         <ul>
+          <li>Moved from exp/audio to audio: No more experimental package!</li>
           <li>Changed APIs (almost fixed)</li>
-          <li>Added exp/audio/vorbis to decode Ogg/Vorbis stream</li>
-          <li>Added exp/audio/wav to decode Wav stream</li>
+          <li>Added <a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio/vorbis">exp/audio/vorbis</a> to decode Ogg/Vorbis stream</li>
+          <li>Added <a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio/wav">exp/audio/wav</a> to decode Wav stream</li>
         </ul>
       </li>
       <li>Others
diff --git a/_docs/public/examples/piano.html b/_docs/public/examples/piano.html
index 0a9739a56..b202f38bf 100644
--- a/_docs/public/examples/piano.html
+++ b/_docs/public/examples/piano.html
@@ -114,6 +114,9 @@ func (s *stream) Close() error {
 }
 
 func addNote(freq float64, vol float64) error {
+    // TODO: Call Close method of *audio.Player.
+    // However, this works without Close because Close is automatically called when GC
+    // collects a *audio.Player object.
     f := int(freq)
     if n, ok := noteCache[f]; ok {
         p, err := audio.NewPlayer(audioContext, &amp;stream{bytes.NewReader(n)})
diff --git a/_docs/public/index.html b/_docs/public/index.html
index 910d234eb..9dd3e466c 100644
--- a/_docs/public/index.html
+++ b/_docs/public/index.html
@@ -35,8 +35,9 @@ pre {
   padding: 1em;
 }
 </style>
+<a href="https://github.com/hajimehoshi/ebiten"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/365986a132ccd6a44c23a9169022c0b5c890c387/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f7265645f6161303030302e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_red_aa0000.png"></a>
 <h1>Ebiten (海老天)</h1>
-<p>v1.3.0-alpha</p>
+<p>Stable version: v1.3.0-alpha / Development version: v1.3.0-alpha</p>
 <ul>
   <li>A simple SNES-like 2D game library in Go</li>
   <li>Works on
@@ -52,7 +53,6 @@ pre {
     </ul>
   </li>
   <li><a href="http://godoc.org/github.com/hajimehoshi/ebiten"><img src="https://godoc.org/github.com/hajimehoshi/ebiten?status.svg" alt="GoDoc Reference"></a></li>
-  <li><a href="http://github.com/hajimehoshi/ebiten">GitHub project page</a> (Development version: v1.3.0-alpha)</li>
 </ul>
 
 <h2>Features</h2>
@@ -121,16 +121,17 @@ pre {
           <li>Linux</li>
         </ul>
       </li>
-      <li>Drawing
+      <li>Graphics
         <ul>
           <li>Added CompositeMode to change composite mode (e.g. masking or additive drawing)</li>
         </ul>
       </li>
-      <li>Audio
+      <li><a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio">Audio</a>
         <ul>
+          <li>Moved from exp/audio to audio: No more experimental package!</li>
           <li>Changed APIs (almost fixed)</li>
-          <li>Added exp/audio/vorbis to decode Ogg/Vorbis stream</li>
-          <li>Added exp/audio/wav to decode Wav stream</li>
+          <li>Added <a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio/vorbis">exp/audio/vorbis</a> to decode Ogg/Vorbis stream</li>
+          <li>Added <a href="https://godoc.org/github.com/hajimehoshi/ebiten/audio/wav">exp/audio/wav</a> to decode Wav stream</li>
         </ul>
       </li>
       <li>Others