Cast To DLNA (Sonos) device name

[PeteyMW]

Hello,

I'm trying to determine how to rename / shorten Sonos speaker names that appear under the 'Cast to device' button. For example, my 2 Sonos speakers appear as:

'192.168.1.30 - Sonos Play:1 - RINCON_#MAC# @Kitchen'
'192.168.1.31 - Sonos Play:1 - RINCON_#MAC# @Office'

I wish to display these as simply the Sonos speaker name - the last word above: @Kitchen; @Office

I've started to investigate whether this can be done via DLNA, CSS or webhooks plugin options, with no success.

BTW, I attempted to enable DLNA debugging as per https://jellyfin.org/docs/general/networking/dlna/ ("Emby.Dlna": "Debug", "Emby.Dlna.Eventing": "Debug"; also tried 'Jellyfin...' in place of 'Emby...') but don't see any [DBG] info. I do see entries like:

[INF] DLNA Session created for "192.168.1.30 - Sonos Play:1 - RINCON_#MAC# @Kitchen" - "Sonos Play:1"
[INF] No matching device profile found. The default will need to be used.
DeviceIdentification { FriendlyName: "192.168.1.31 - Sonos Play:1 - RINCON_#MAC' @Kitchen" ...


I hope someone can advise - thank you.

Cheers,
Pete

Dietpi system running Jellyfin v10.9.3