Hi @Bill_Reeve,
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.
As Ged suggested, definitely try giving your Core machine a reboot.
Is TIDAL content playing okay, it’s just adding content that is an issue?