Serviio

I am running all of my TV's on one Vlan and my main computer which is running Servio on another Vlan.

Does anyone know how to make Servio Available on my TV Vlans ?

I see Plesk has an option but I am not seeing it on Servio.

Basically a VLAN is a completely independent network from another VLAN. The only way for traffic to pass between them is via routing rules. UPnP uses port 1900 UDP, and Multicast is another function that must pass between the two VLANs. While I do have some networking experience, I've never bothered with VLANs on my home network as everything I have on the network is fine talking with each other. However you have your VLANs configured, there should be some place for routing rules to be applied, and that is where you need to begin looking.