From what I understand, and I also have a W4S MS-2, it can not be integrated with Roon. I asked the question of W4S and was told that it was not possible - something to do with fact that the MS-2 is 32 bit architecture, whilst Roon required 64 bit (I am not “techy” enough to know the ins and outs of that one!) so it could not be used as a Roon end point! The new W4S MS1 is however Roon compatible.