Hi Neetu, I've seen this page and even used the test files provided, but came up against the question of whether the channels were down-mixed depending upon the player app used... but I did not try winamp before. Thanks so much for your suggestions! Best regards, Ernie Ernest L. Burghardt Software Engineer Logitech 360-256-3239 (office) To wdmaudiodev@xxxxxxxxxxxxx "Neetu Sand" cc <neetu.freelist@xxxxxxx om> Subject [wdmaudiodev] Re: 7.1 test audio Sent by: wdmaudiodev-bounce@free lists.org 04/20/2008 11:01 PM Please respond to wdmaudiodev@xxxxxxxxxxx rg Hi Ernie, You should be able to download and use the tool below to generate 7.1 channel test audio: http://www.microsoft.com/downloads/details.aspx?FamilyId=72F6F2FA-0ABE-4A92-9DD0-FD35B966825C&displaylang=en If you want more details on this then goto: http://www.microsoft.com/windows/windowsmedia/howto/articles/creating71audio.aspx This will provide you enough information to generate the test audio. You should be able to use "Winamp" as a test tool/application for multi-channel audio. Thanks, Neetu. On Sat, Apr 19, 2008 at 3:27 AM, <Ernest_Burghardt@xxxxxxxxxxxx> wrote: Hi Everyone, I am looking for some 8 discrete channel test audio and a corresponding player that will allow me to test a filter driver. I have attempted to use a Blu-ray drive and play with PowerDVD BD edition that came with the player, but when booting into debug mode of XP, PowerDVD suddenly complains about the video driver. So this leaves me without the 8 channel audio that I am interested in... Any suggestions would be welcomed. Thanks in advance, Ernie Ernest L. Burghardt Software Engineer Logitech 360-256-3239 (office)