[MasterTom99]

Are you using an old version of the addon? The "add to library" function was removed a while ago. Unfortunately it was not possible to play files from this addon from kodi's music library. I would actually love to have this feature and be able to add songs or albums from spotify to my music library in kodi

I'm using version 1.0.26 of the addon and I definitely do not have the "add to library" function in the addon. In case you do not know how to find your version, go to the addons section in kodi settings and look for this addon. You can see the version you have installed then.

Hello,
I have no access to my computer right now, because my family is using it
Nevertheless I think I´m using V1.0.25, because this is mentioned "stable". I will update to 1.0.26 later this night. Thank you for your help.