Hi, Tobias. The last time I tried to register a new Multimedia Product ID using the mmreg email alias, Microsoft told me they didn't register these anymore, and said users should create their own Multimedia Manufacturer and Product IDs these days using GUIDs and KSPROPERTY_GENERAL_COMPONENTID. Take a look at this page in the DDK, which has info about this: Windows DDK Streaming Devices (Video and Audio) Design Guide Audio Drivers Driver Support for Legacy Audio Interfaces WDM Audio Extensions to Legacy Windows Multimedia APIs Extended Capabilities from a WDM Audio Driver The drawback is that this method requires Windows XP or later. But there's a workaround if you're on earlier OS platforms: your application software can send an IOCTL_KS_PROPERTY request to ask your driver for the KSPROPERTY_GENERAL_COMPONENTID property and get back the KSCOMPONENTID struct with your GUIDs in it. It's not as convenient as using xxxGetDevCaps, but it works. Best regards, -Dan ----- Original Message ----- > From: wdm > Subject: [wdmaudiodev] AW: Wav file format tags--updates?? > Date: Wed, 23 Jun 2004 08:16:17 +0200 > > I have also contacted this address to obtain a "MIDI Manufacturer > and Product Identifier" for my MIDI-driver, but also received no > response. This is somewhat frustrating... > > Tobias ****************** 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/