Can't get progress to work. Using v 1.0.1.
Any ideas?

Yes,
Looks like it's the Spotify component you are using as the entity in the cards.
The Spotify component doesn't expose the necessary attributes to calculate the progress.
media_duration, media_position and media_position_updated_at.
Nothing I can do about it, sorry.
Well, but your very example shows the progress when Spotify component is used as an entity, doesn't it? Please see the screenshot attached.

That's just a mockup. You can name your entities anything, doesn't necessarily mean it's using the Spotify component because it's name is Spotify.
But I see your point, could be confusing, will rename it next version 馃憤
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That's just a mockup. You can name your entities anything, doesn't necessarily mean it's using the Spotify component because it's name is Spotify.
But I see your point, could be confusing, will rename it next version 馃憤