Hi saratoga!
Thanks for your quick reply. When I first read it, I wondered how stupid I could be for not having that simple idea myself!
When I finally tried it, unfortunately, I had to find out I doesn't get me very far: The volume from the headphone out is SO low, that even when I turn up the volume to -0db, there is barely any audible sound from my speakers! I don't know if this problem happens with all DAPs or just my Cowon X5, but it looks like there is no real solution to this problem!
Thanks anyway
RBNB