Linux isn't officially supported by the Spotify music service, but if you're a premium or unlimited subscriber, you can get the Spotify for Linux preview version onto Ubuntu. Here's how:
Step 1: Open up a terminal window (CTRL+ALT+T).
Step 2: Add Spotify to the list of repositories by adding the following line in /etc/apt/sources.list, deb http://repository.spotify.com stable non-free
Type command:sudo vi /etc/apt/sources.list
Step 3: Add Spotify's public key to verify downloaded packages.
Type command:sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4E9CFF4E
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