Spotify - Map shows when two people play same song at same time
Skip Tunes - Control iTunes, Spotify, or Rdio from your Mac's menubar
SoundCloud - Enjoy music & follow favourite artists
SpotiMy - Play/Pause and Next/Previous functions for Spotify directly on your Menu Bar!
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Bowtie - Bowtie is a desktop accessory that allows you to see and control your music (iTunes, Spotify...