Hi all, I'm trying to expose my driver dataranges subtype as KSDATAFORMAT_SUBTYPE_IEEE_FLOAT instead, but if I do that, the device never shows up in Sound control panel. When I use KSDATAFORMAT_SUBTYPE_PCM it does. This is on Vista. Ideas as to why ? TIA /Rob ****************** 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.com/