Hello Ernie, I have a portaudio based player. It is a test player, written in c# - partly with the functionality I needed at the moment. It does multichannel audio with waveformatextensible, through Asio, direct sound and wmme. In the current version it uses channelmask 0, but this can be easily modified in visual studio. I?ll gladly give you a copy if it fits your needs J Best Regards Bernt Ronningsbakk <http://www.juicehifi.com/> Juice Hifi - the home of Audiolense juice_logo 200 audiolense_logo 200 From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Ernest_Burghardt@xxxxxxxxxxxx Sent: 18. april 2008 23:58 To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] 7.1 test audio 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)