Spotify is available from the AUR.
yaourt -S spotify
To play local file you will need to also install
yaourt -S ffmpeg0.10
For some (currently) unknown reason, launching Spotify crashes when I login. The only fix I have found so far is to change the scale factor from the default
1 to something else. You can do that by launching it at the command line:
To make this permanent, edit
[Desktop Entry] Name=Spotify GenericName=Music Player Comment=Spotify streaming music client Icon=spotify-client Exec=spotify --force-device-scale-factor=2 TryExec=spotify Terminal=false Type=Application Categories=Audio;Music;Player;AudioVideo; MimeType=x-scheme-handler/spotify;