Jerry, We are not doing anything directly to break DirectKS in Vista although we as you indicate did state in the past (when DirectKS was born) that we did not guarantee that this model will be maintained for future OS. To update that disclaimer, DirectKS should still work in Vista with appropriate audio driver models although I am not sure it makes sense to use that model anymore since the Vista audio system is so much better than past OS with regards to latency, thread priorities, etc. We feel there is less need for audio content creation applications to bypass the Vista audio subsystem than has ever been the case before but if necessary there is a built in direct mode called Exclusive Mode that can be utilized. If you really want to though, I believe DirectKS can still offer that direct link as well. If you are a Vista Beta tester and find that DirectKS apps do not work, PLEASE file bugs. Sincerely, Hakon Strande PM Integrated, Internal, External, and Wireless Audio Devices MediaTech/DMD/Windows Client/Microsoft ________________________________ From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry Evans Sent: Friday, January 27, 2006 10:07 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: Hi, Hi Nugen I'd qualify this by checking your latency requirements. If you need latencies of less than 20ms or so then it going to be very hard to do with the existing USB stack. It is also wrth mentioning that the KS interface is likely to be dropped in Vista so the investment in time may be of limited value. Some of the Microsoft people here may be able to comment on this. A quick way to test latency and stability is to try ASIO4ALL (www.asio4all.com). This is an ASIO interface to KS. You can then use an ASIO compliant application like Cubase to test your hardware (or write something using PortAudio or similiar) Off the shelf USB drivers can be had here: http://www.thesycon.de/eng/usbio.shtml (I am not affiliated BTW). I believe that these will offer considerably better performance. HTH Jerry