This is useless because it is an access point that you could connect to an existing router to connect a device to the LAN. To set up a WLAN, you need a WLAN repeater, e.g. this model is ideal, it is inexpensive and also has fast Gbit connections. With it, you can set up a WLAN, which the Sonos speakers can then connect to.

Xiaomi Mi Router 4A Giga Version