VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Nightingale - Nightingale is a free and powerfull music player for Linux, Windows and Mac
AIMP - AIMP : Free Audio Player : Официальный сайт программы
GNOME Music - Music is the new GNOME music playing 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.
Roon (Music Player) - Roon is a music playing application for audiophiles