I went through the posted procedure to set up JRiver on a Mac mini to PWD MK2 with bridge and ran ino issues. Basically I ran a direct connection between my Mac mini and PWD MK2 with bridge using CAT6 cable (no router involved). I manually set the IP and subnet address between the Mac and PS DAC, which works fine and I know they are communicating. When selecting “original” I get no sound. However, when selecting “Specified output format” instead sound comes through fine. My guess is that the setting you recommend is “bit perfect” while the other is not because with the later setting I do not have volume control options, nor do do I have playback options available. Further, the audiopath says “not using JRiver audio engine”. Can you help me rectify this. One suggestion was to use a "cross over cable" instead of the regular CAT6 which I am using, although I do not necessarily see why that would matter.