diff --git a/src/audio.rs b/src/audio.rs
new file mode 100644
index 0000000..1422c29
--- /dev/null
+++ b/src/audio.rs
@@ -0,0 +1,40 @@
+// Copyright (c) 2015 T. Okubo
+// This file is part of vlc-rs.
+// Licensed under the MIT license, see the LICENSE file.
+
+use ffi;
+use ::MediaPlayer;
+
+pub trait MediaPlayerAudioEx {
+    fn get_mute(&self) -> Option<bool>;
+    fn set_mute(&self, bool);
+    fn get_volume(&self) -> i32;
+    fn set_volume(&self, volume: i32) -> Result<(), ()>;
+}
+
+impl MediaPlayerAudioEx for MediaPlayer {
+    fn get_mute(&self) -> Option<bool> {
+        let r = unsafe{ ffi::libvlc_audio_get_mute(self.ptr) };
+
+        if r == 0 {
+            Some(false)
+        }else if r == -1 {
+            None
+        }else{
+            Some(true)
+        }
+    }
+
+    fn set_mute(&self, status: bool) {
+        unsafe{ ffi::libvlc_audio_set_mute(self.ptr, if status { 1 }else{ 0 }) };
+    }
+
+    fn get_volume(&self) -> i32 {
+        unsafe{ ffi::libvlc_audio_get_volume(self.ptr) }
+    }
+    fn set_volume(&self, volume: i32) -> Result<(), ()> {
+        unsafe{
+            if ffi::libvlc_audio_set_volume(self.ptr, volume) == 0 { Ok(()) }else{ Err(()) }
+        }
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index e286569..c6af18d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,6 +14,7 @@ mod media_list;
 mod media_library;
 mod enums;
 mod video;
+mod audio;
 
 pub use enums::*;
 pub use core::*;
@@ -22,3 +23,4 @@ pub use media_player::*;
 pub use media_list::*;
 pub use media_library::*;
 pub use video::*;
+pub use audio::*;