hi all, I have implemented a datarangeIntersection() fonction , from the MSVAD/pcmex sample, in order to support the waveformatextensible format for multichannel. I have added other things for the channel configuration. My problem is that, in DataRangeIntersection() the clientDataRange channel number is always OxFFFF (65535) at the begining, when I paly a multichannel file with WMP. Then, my driver convert the file in CHANNELS. In KSSTUDIO my dataranges are good. Any solutions/suggestion for this peoblem? I have seen that this problem has already appeared several times. thanks Fred --------------------------------- Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger Téléchargez le ici !