The archive might hold third-party software like ViWizard or TunePat designed to bypass DRM and convert Spotify tracks for offline use.
Because this is a .rar archive from an unofficial source, you should handle it with extreme caution: Spotifyvm.rar
It may contain a pre-configured Virtual Machine for testing Spotify's open-source developer portal, Backstage. The archive might hold third-party software like ViWizard