docs(multiroom): the player as a Volumio device
docs(wiki): Snapcast on the Multiroom page; the snapserver key Signed-off-by: foonerd <157698061+foonerd@users.noreply.github.com>
docs(multiroom): the player as a room of an Evo group Signed-off-by: foonerd <157698061+foonerd@users.noreply.github.com>