Thanks for reaching out, @Larry_Topper, and apologies for the difficulties here!
So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Just to confirm — You can see your library in Roon, you just can’t play it? Do you get any error messages when attempting to do so?
Is local content working okay, or are you unable to play that either?
Thanks!