[infinity85]

You MUST input credentials in the add-on, even for the discovery...
That account will be considered as the default account for the browsing etc.

It is possible to use the discovery to overrule that default user for the connect player only.

Ah okay! Tried it and it works now Awesome work @marcelveldt!

How come that it needs credentials compared to LibreSpot from LibreELEC developers? Another example: FireTV does also offer discovery without credentials. You simply choose the FTV in the Smartphone App and then the whole account (including browsable playlists etc.) appears on the firetv. Apparently the handshake also transmits the credentials, which also means that the last connected account stays connected even after a shutdown until somebody connects with a different spotify account through the connect discovery feature.

Now some feedback:
1. After a minute or so kodi jumps into a fullscreen playback mode, which shows the track title and timeline/current-playback-progress at the bottom. Here - for some reason - the cover of the currently playing track isn't displayed. (Perhaps skin related issue?)
2. Controlling the playback is very laggy. From smartphone via spotify connect it takes about 3 to 5 seconds to respond to presses like play/pause or seeking/jumpin within the track.
3. Repeat and Shuffle Buttons do not work apparently. Tried to press them in the Smartphone app and they do not get enabled/disabled feedback (turning green/grey)

Besides there things it is simply great to see how finally somebody realized a spotify addon for kodi Thanks very very much for your effort!


EDIT
@awiouy is apparently also using an additional discovery mode with "mdns": https://github.com/plietar/librespot/pull/201