USBlink by G4ILO

I have been playing around with building a USB interface using a cheap USB soundcard. It looks like Julian G4ILO has beat me to it. He has built a very nice interface. It also uses Skip Teller's KH6TY Vox circuit. The only thing I would do different would be to add some isolation transformers. Check out his build here:

http://www.g4ilo.com/usblink.html