Hello Eugene, > Generating a new GUID and new Media Category on each driver start-up > is a bad idea... It is a VERY bad idea but however it is the only way :( > (Also, I read somewhere these categories might be cached and the > changes won't work until reboot) Try to stop and restart WdmAudio and AudioEndpointBuilder services after name changing. If new names will be shown properly after service restart, you can trigger endpoint rebuilding by disabling and enabling an appropriate wave/topology interface. Regards, Eugene ****************** 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/