[img] Having dual Spotify accounts that both can play and control would be a WAF game changer! Both I and my GF use Spotify and we have our own playlists etc. While she can use the iPhone via Airplay, she cannot do that from her PC. [/img]
With the connect plug-in (volsptoconnect2) you should be able to do this by setting the account type to "multi-user".. Then Spotify clients within the network should be able to see Volumio as a connect capable speaker, and let everyone connect to it from the convenience of the official Spotify clients (Desktop/Apple/Android). It won't work with the Spotify browser client thought.