I am thinking about getting a music server (Sony Hap-z1es). I have heard that pc's are "noisy". I'm not really sure if this refers to the fans running or if it means in the signal. I guess the real question is would a music server such as the sony be better than a pc with a high quality external dac? After all the music would still be downloaded on the pc and then transferred to the server. So the pc isn't really out of the loop and what about ethernet? Could ethernet contaminate the signal?