Hi all, The Virtual audio device driver that i developed on the basis of MSVAD is working fine with all the audio application on my desktop (both the capture and render), i am routing this capture/render streams over an network to an linux machine, their also no problem all are well. But the problem appears when i am using any VOIP application (Skype,gtalk etc...) the audio routed from the voip application is too scratchy. what may be problem in my driver. I am struck with this problem from 3 days. Karthik SG