hi all, I am new to this and am totally incompetent with all things technical (just love the sound that comes out) and need some help. I have decided to start the computer audio journey and would love to connect a Wndows 7 PC running JRiver to the DAC buried in my trusty (not so old but apparently superseded by events) Wadia 381i. I hoped it was a simple as connecting the usb (asynchronous, like I know what that really means!) cable from the back of the PC into the wadia and selecting usb input on the menu. but the wadia seems to receive no signal . I suspect I need a special USB audio driver on the PC but wadi as website reveals nothing. can anyone tell me there is a simple trick I am missing... or a complicated one. grateful for any pointers. James