I have a MacBook from 2009 running Windows 7 32 bit via Bootcamp.
I have JRiver MC28 installed on it. It seems to work fine as a client. The server is a Zen 2 Ryzen 5 setup running Windows 10.
I am able to listen to streamed audio, watch live TV, and watch prerecorded shows (set to be converted to MPEG-2-TS 480p in Media Network->Client Options->Video Conversion” in Options).
Problems: Sometimes there is an error message “Media Center 28 is running, but there may be a problem,” but then it opens OK anyway.
This is now a rarely used computer, and there may be more problems than I have yet experienced. Also, I have not tested its use as a server.