Default device doesn't detect Winamp

[Lone22]

I'm using ASUS Xonar DGX Audio Device as playback but it doesn't detect winamp's music, instead ASUS Stereo Mix and ASUS Wave from Recording tab detects it. I have set Xonar as playback device from Winamp DirectSound Output but it doesn't work. The problem with this is
that i can't get winamps sound to my stream because Xonar (default device) doesn't detect it. All audio (games, other music players) is going through Xonar, Stereo Mix and Wave except winamp.