Spotify - Map shows when two people play same song at same time
iBroadcast - iBroadcast is a place to consolidate all of your music online.
SoundCloud - Enjoy music & follow favourite artists
netjukebox - netjukebox is a web-based media jukebox for MPD, VideoLAN and Winamp/httpQ.
Ampache - Web ( HTTP centralized ) based audio/video streaming application
YouTube Music - YouTube Music is a streaming app primarily designed for Android and iOS mobile devices. The app lets individuals search for music from their favorite artists, enjoy playlists, and access 30 million musical tracks.