Dear all: Nice to meet you,I spent some time on the usb audio driver.There isn't any sample in ddk.They all based on pci such as AC97.And i don't think any USB audio device will be compatible,but how to implement a USB audio driver. I am a novice to the development of usb audio driver and for some reason,I need to implement a usb custom audio driver with a UAA-compatible usb audio device.Any ideas?Any samples? I need your help! Best wished! suhetao ****************** 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/