Spotify - Map shows when two people play same song at same time
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
SoundCloud - Enjoy music & follow favourite artists
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
Clickmp3 - Convert a YouTube video to MP3 with a 2 clicks with the YouTube converter Clickmp3.
Windows Media Player - Get information about Windows Media Player and other Windows Media technologies.