Sound Entity Doesn't work

[batass]

Hello,

I copy the sound "ambience_haunting.ogg" and "ambience_haunting.snt" from Amnesia.app/Contents/Resources/sounds/ambiance and paste it in Amnesia.app/Contents/Resources/custom_stories/mymap/sounds.
In HPL Level Editor, I use the "sounds (5)" tool and put this sound in my map, right in the place where I appear in the game.
When I select it, I can see that his name is "Sound_1", it's active, there is nothing written in the "Sound Entity File" square, "Use Default" is checked, Distance is min=1/max=5 and volume=1.
Here is the .sng file I use:

<SOUNDENTITY>
<SOUNDS>
<Main>
<Sound File="ambience_haunting" />
</Main>
</SOUNDS>
<PROPERTIES Volume="0.5" MinDistance="0" MaxDistance="0" Random="1" Interval="0" FadeEnd="False" FadeStart="False" Stream="True" Loop="True" Use3D="False" Blockable="False" BlockVolumeMul="0.5" Priority="0" />
</SOUNDENTITY>

The problem is: When I Play my Custom Story, I can hear my footsteps, my heartbeat when there's no lightning, etc..., but I can't hear my sound.
Do I forget something?

Thank You and sorry for my english.