
What you need is the AudFree Music Converter for Spotify, which is an all-in-one specific audio converter for Spotify Music.
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So here comes the key point: how to import Spotify songs to iTunes and the Windows Media Player? This workaround needs users to transfer Spotify music to iTunes, Windows Media Player, Foobar2000 Player or others that add music skins and widgets for Rainmeter to use Spotify with Rainmeter skins. Use Rainmeter Music Player for Spotify Music - Tool Required

It means that the Spotify Rainmeter plugin has been incompatible with the Spotify app any longer. However, the Rainmeter Spotify plugin has shut down since the end of 2018. Users can customize the style based on their preferences. The user's interface is cleaner, simpler and easier to use.
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And the Spotify Rainmeter skin involves all the features of a standard player, such as Play, Pause, Previous, Next and so on. It is free and open-source for users to create their unique "skins", which contains a series of desktop plugins or widgets.

What is Rainmeter Spotify skin or plugin? Rainmeter is a desktop customization tool.
