As a big fan of Spotify, I often listen to music on Spotify. Once I was a premium user on Spotify for downloading Spotify music, but I found those downloaded files cannot be played out of Spotify. Then I google how to control music downloaded from Spotify and how to play them out of Spotify. Later, I installed Tunelf Spotify Music Converter on my pc. Now, I could convert Spotify to mp3 through that Spotify music downloader and play them on any device and player anytime.