I just found a somewhat obscure issue when restoring a library to a new machine - the restore brings along the network access key from the original machine, but the JRiver database still points to the old PC. Plus, if you keep the old system active, you now have 2 machines on your LAN with the same access code. You need to create a new access key on the new PC in order for other systems to be able to access the new system as a server. And, that means that on the other computers on the network you have to add the library access keys in Playing Now for the new system. It would be nice if the restore created a new access key for a new computer (or gave you the option to do that) and, in the extreme, optionally added that new key to each of the other systems on the network. I guess the other option would be to have the new computer tell the JRiver database its new address so that it is associated with the original access key. That works if you are replacing the old system with the new, but does not work for cloning a system. I understand there is no easy solution to this, but this problem can be hard for an inexperienced user to identify.