Peter, thanks so much for your reply Yes I can send from Linux sound apps to Jack in stereo, but I can't in wineasio, its two signals combined into one,the L - R are both one signal, but there is only one channel in them, I think its the right ONLY being heard in both sides. So you see I have no stereo because of this. Sorry I made a mistake about the wineasio version its not 1.74 there is no 1.74 but it is 0.74 oops. Thanks again, hope to get this fixed ;)