SONOS and VLAN

[Bangee]

Hi all

I try to set up a network at home using pfsense as FW, Ubiquit WLAN senders and SONOS Sound system.
Now I've got the following setup:

LAN Clients: 192.168.0.1/24
SONOS WLAN VLAN: 192.168.40.1/24

Unfortunatly I can't find my sonos system from my PC, which is connected to the LAN Subnet.

How can I enable this on my PFSense Firewall?

Thanks for your support.
Bangee