Hello, I have a simple WDM Audio driver that is managing a piece of hardware that does NOT produce linear PCM audio data (it's MuLaw encoded). The driver does a simple conversion between MuLaw and PCM audio and everything works well. I wanted to let the Windows kernel components (KMixer, ACM, whatever) do this conversion for me so I changed the WDM audio driver to present MuLaw as the native audio format. Now when I use Windows Sound Recorder it records a MuLaw file. That would be expected since the application supports MuLaw. I tried running CoolEdit (which apparently only supports linear PCM) and it fails to allow me to record now (says the driver does not support the right format). Why would Windows NOT do this conversion for me? I was expecting Windows to see that CoolEdit wants linear PCM and the driver only supports MuLaw and to do the conversion for me. Is there something I have to do from the WDM driver's perspective to get this to happen ? Thanks in advance for your help. --- Larry Cawley CreativeMedia Software Solutions, Inc. www.CreativeMediaSoftware.com <http://www.creativemediasoftware.com/> lcawley@xxxxxxxxxxxxxxxxxxxxxxxxx (636) 458 1462 Yahoo! IM: lcawley ****************** 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: //www.freelists.org/cgi-bin/webpage?webpage_id=wdmaudiodev