Installing Spotify
Add the Spotify repository signing key to be able to verify downloaded packages
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys BBEBDCB318AD50EC6865090613B00F1FD2C19886
Add the Spotify repository
echo deb http://repository.spotify.com stable non-free | sudo tee /etc/apt/sources.list.d/spotify.list
Update list of available packages
sudo apt-get update
Install Spotify
sudo apt-get install spotify-client
Get ligcrypt11 package from sid:
sudo dpkg -i http://ftp.acc.umu.se/mirror/cdimage/snapshot/Debian/pool/main/libg/libgcrypt11/libgcrypt11_1.5.3-5_amd64.deb
Install libgrypt11 package
sudo dpkg -i libgcrypt11_1.5.3-5_amd64.deb