VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Audiorealm.com - AudioRealm is your destination for thousands of radio stations from all over the globe.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Spotify - Map shows when two people play same song at same time
foobar2000 - An advanced freeware audio player for the Windows platform.
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