Spotify - Map shows when two people play same song at same time
Clementine - Clementine is a cross-platform free and open source music player and library organizer based on...
SoundCloud - Enjoy music & follow favourite artists
foobar2000 - An advanced freeware audio player for the Windows platform.
Ampache - Web ( HTTP centralized ) based audio/video streaming application
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.