thank you gale for your answer but i don't understand all the device toolbar topic.
My objective is that record the sounds of the speakers and keep the sound of the headphones for me just for prepare the next track.
When i put (i'm testing all the combinations posible) :
* MME / mixdeck quad or sound mapping / mono or stereo / speakers (mixdeck quad) or Numeric Audio (SPDIF)
* Direct Sound / mixdeck or Audio capture Principal / mono or stereo / speakers (mixdeck quad) or numeric audio (SPDIF)
The result is the same : Audacity is recording the sound of my headphones.
And when i put :
Windows WASAPI / mixdeck quad /mono or stereo / speakers (mixdeck quad)
i recieve : "Error while opening sound device Please the recording device settings and the project sample rate"
Sorry one more time for my level
Thank you gale !