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Official Spotify clients use proprietary encryption keys. Spotube utilizes (an open-source client library for Spotify) to handle authentication. This allows the app to access the user's library, playlists, and liked songs without running the closed-source Spotify binary.
: Recent legal pressures have forced Spotube to distance itself from direct Spotify API integration, meaning future versions may not sync with official Spotify accounts or playlists as easily. Comparison and Legal Landscape Spotify X -Spotube Mod-