diff --git a/lib/Alchemy/Phrasea/Controller/Admin/SubdefsController.php b/lib/Alchemy/Phrasea/Controller/Admin/SubdefsController.php
index 6b938cb569..a0adaba9ac 100644
--- a/lib/Alchemy/Phrasea/Controller/Admin/SubdefsController.php
+++ b/lib/Alchemy/Phrasea/Controller/Admin/SubdefsController.php
@@ -145,6 +145,7 @@ class SubdefsController extends Controller
                         $options[Audio::OPTION_AUDIOBITRATE] = $config["audio"]["definitions"][$preset][Audio::OPTION_AUDIOBITRATE];
                         $options[Audio::OPTION_AUDIOSAMPLERATE] = $config["audio"]["definitions"][$preset][Audio::OPTION_AUDIOSAMPLERATE];
                         $options[Audio::OPTION_ACODEC] = $config["audio"]["definitions"][$preset][Audio::OPTION_ACODEC];
+                        $options[Audio::OPTION_AUDIOCHANNEL] = $config["audio"]["definitions"][$preset][Audio::OPTION_AUDIOCHANNEL];
                         foreach ($config["audio"]["definitions"][$preset][Subdef::OPTION_DEVICE] as $devices) {
                             $options[Subdef::OPTION_DEVICE][] = $devices;
                         }
@@ -211,7 +212,7 @@ class SubdefsController extends Controller
     {
         $mapping = [
             Type::TYPE_IMAGE    => [Subdef::TYPE_IMAGE, Subdef::TYPE_PDF],
-            Type::TYPE_VIDEO    => [Subdef::TYPE_IMAGE, Subdef::TYPE_VIDEO, Subdef::TYPE_ANIMATION],
+            Type::TYPE_VIDEO    => [Subdef::TYPE_IMAGE, Subdef::TYPE_VIDEO, Subdef::TYPE_ANIMATION, Subdef::TYPE_AUDIO],
             Type::TYPE_AUDIO    => [Subdef::TYPE_IMAGE, Subdef::TYPE_AUDIO],
             Type::TYPE_DOCUMENT => [Subdef::TYPE_IMAGE, Subdef::TYPE_FLEXPAPER, Subdef::TYPE_PDF],
             Type::TYPE_FLASH    => [Subdef::TYPE_IMAGE]
@@ -543,11 +544,19 @@ class SubdefsController extends Controller
                         Audio::OPTION_ACODEC          => "libmp3lame",
                         Subdef::OPTION_DEVICE         => ["all"]
                     ],
+                    "Wave Mono 256 kbit/s"   => [
+                        Audio::OPTION_AUDIOBITRATE    => "256",
+                        Audio::OPTION_AUDIOSAMPLERATE => "16000",
+                        Audio::OPTION_ACODEC          => "pcm_s16le",
+                        Audio::OPTION_AUDIOCHANNEL    => "mono",
+                        Subdef::OPTION_DEVICE         => ["all"]
+                    ],
                 ],
                 "form"        => [
                     Audio::OPTION_AUDIOBITRATE    => "slide",
                     Audio::OPTION_AUDIOSAMPLERATE => "select",
                     Audio::OPTION_ACODEC          => "select",
+                    Audio::OPTION_AUDIOCHANNEL    => "select",
                     Subdef::OPTION_DEVICE         => "checkbox",
                 ],
             ],
diff --git a/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php b/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
index fe2ac305c9..8da30984f0 100644
--- a/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
+++ b/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
@@ -201,6 +201,8 @@ class FilesystemService
                 return 'ogg';
             case 'libmp3lame':
                 return 'mp3';
+            case 'pcm_s16le':
+                return 'wav';
         }
 
         return null;
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/Audio.php b/lib/Alchemy/Phrasea/Media/Subdef/Audio.php
index ac50940dc1..2551669dd1 100644
--- a/lib/Alchemy/Phrasea/Media/Subdef/Audio.php
+++ b/lib/Alchemy/Phrasea/Media/Subdef/Audio.php
@@ -19,6 +19,7 @@ class Audio extends Provider
     const OPTION_THREADS = 'threads';
     const OPTION_ACODEC = 'acodec';
     const OPTION_AUDIOSAMPLERATE = 'audiosamplerate';
+    const OPTION_AUDIOCHANNEL = 'audiochannel';
 
     public function __construct(TranslatorInterface $translator)
     {
@@ -29,9 +30,12 @@ class Audio extends Provider
             47250, 48000, 50000, 50400, 88200, 96000
         ];
 
+        $audioChannel = ['mono', 'stereo'];
+
         $this->registerOption(new OptionType\Range($this->translator->trans('Audio Birate'), self::OPTION_AUDIOBITRATE, 32, 320, 128, 32));
         $this->registerOption(new OptionType\Enum($this->translator->trans('AudioSamplerate'), self::OPTION_AUDIOSAMPLERATE, $AVaudiosamplerate));
-        $this->registerOption(new OptionType\Enum($this->translator->trans('Audio Codec'), self::OPTION_ACODEC, ['libmp3lame', 'flac'], 'libmp3lame'));
+        $this->registerOption(new OptionType\Enum($this->translator->trans('Audio Codec'), self::OPTION_ACODEC, ['libmp3lame', 'flac', 'pcm_s16le'], 'libmp3lame'));
+        $this->registerOption(new OptionType\Enum($this->translator->trans('Audio channel'), self::OPTION_AUDIOCHANNEL, $audioChannel));
     }
 
     public function getType()
@@ -53,7 +57,21 @@ class Audio extends Provider
         $this->spec->setAudioCodec($this->getOption(self::OPTION_ACODEC)->getValue());
         $this->spec->setAudioSampleRate($this->getOption(self::OPTION_AUDIOSAMPLERATE)->getValue());
         $this->spec->setAudioKiloBitrate($this->getOption(self::OPTION_AUDIOBITRATE)->getValue());
+        $this->spec->setAudioChannels($this->getChannelNumber($this->getOption(self::OPTION_AUDIOCHANNEL)->getValue()));
 
         return $this->spec;
     }
+
+    private function getChannelNumber($audioChannel)
+    {
+        switch($audioChannel)
+        {
+            case 'mono':
+                return 1;
+            case 'stereo':
+                return 2;
+            default:
+                return null;
+        }
+    }
 }
diff --git a/lib/classes/databox/subdef.php b/lib/classes/databox/subdef.php
index 0dcab4ccc1..f1a269d731 100644
--- a/lib/classes/databox/subdef.php
+++ b/lib/classes/databox/subdef.php
@@ -44,7 +44,7 @@ class databox_subdef
         SubdefType::TYPE_DOCUMENT => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_FLEXPAPER, SubdefSpecs::TYPE_PDF],
         SubdefType::TYPE_FLASH    => [SubdefSpecs::TYPE_IMAGE],
         SubdefType::TYPE_IMAGE    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_PDF],
-        SubdefType::TYPE_VIDEO    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_VIDEO, SubdefSpecs::TYPE_ANIMATION],
+        SubdefType::TYPE_VIDEO    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_VIDEO, SubdefSpecs::TYPE_ANIMATION, SubdefSpecs::TYPE_AUDIO],
         SubdefType::TYPE_UNKNOWN  => [SubdefSpecs::TYPE_IMAGE],
     ];
     const CLASS_THUMBNAIL = 'thumbnail';
@@ -156,6 +156,10 @@ class databox_subdef
         if ($sd->audiosamplerate) {
             $audio->setOptionValue(Audio::OPTION_AUDIOSAMPLERATE, (int) $sd->audiosamplerate);
         }
+        if ($sd->audiochannel) {
+            $audio->setOptionValue(Audio::OPTION_AUDIOCHANNEL, (string) $sd->audiochannel);
+        }
+
         return $audio;
     }
     /**