Media server across VPN


I have 2 bridged networks lan1 and lan2 via zerotier vpn. So I can access every host on lan 1 from lan 2 and viceversa.
On lan 1 is present a kodi media server which is reachable from both networks by typing ip address
On lan 2 I've an audio streamer which only finds servers on the local subnet, I cannot manually configure it to tell where find a server.
My question: is it possible to aliases only the ip address of kodi to the router of lan2 as the audio streamer find it automatically?

You can try the solution from this topic.