All current methods to do this are flawed. The only way to get a stream into Roon from Vinyl is to use an ADC, to feed into internet radio encoding software such as liquid soap, rocket broadcaster ets and the an internet radio server software such as icecast. Then Roon can pick it up as flac radio stream. Whilst it works the encoder side on all os platforms is a big weak leak and none currently do 24bit with a high sample rate which you want if you want DSP. The best your can get is 16bit. Recent liquidsoap versions support ffmpeg for encoding so may achieve 24bit but building a version for your distro is not fun or simple. I have now given up on this as a way to get it in to Roon. Also the latency is really bad especially via icecast and if using a raspberry pi your looking at 10seconds.