The answer is no, he cannot. I have to wonder why you would (other than to use the Lumin DAC).
To me, it's sort of like asking if you can put your bike inside your car and ride it. Rip those darn CD's and stream baby stream! You'll wonder why you didn't do it sooner.
I agree completely, Mike. After hearing an appropriately ripped cd through a good streamer like the Linn or Lumin (I want to hear it badly), I can't imagine going back.