Hi I've got more questions concerning AVStream device identification. Can AVStream filter consuming 8KHz A-law stream be visible as a WaveOut device? How can I identify Wav device for chosen hardware device (it has to work on W2K)? I used Waldemar's advice and use friendly name for my interfaces so I can identify DirectShow filters, but how can one obtain wav device id. Should the device itself be named? (when I launch devicetree tool it appears as unnamed) From WaveAPI documentation I assume that device id is the same as device handle. best regards Konrad ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/