I had a revelation yesterday. My music server is pimped out dedicated machine with no graphics card, special USB card, fanless, linear power supply etc. I also have a gaming workstation with X99 6 core intel, fans, powerful graphics card, digital switching supply etc.
It pains me to say but the X99 workstation blew the dedicated music server away even without special parts like linear power supply, fanless cooling, special USB card etc.
Now could be that the old windows installation I am using on the music server is the limiting factor (Windows server installation is out of action for now - gaming machine uses Windwos 8.1) but I have a feeling it's not all down to the OS.
I will have to report back once I get a Windows server installation back up and running, but I fear the main factor here is the 6 core intel horsepower...