Clementine - Clementine is a cross-platform free and open source music player and library organizer based on...
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Strawberry - Strawberry is an audio player and music collection organizer.
foobar2000 - An advanced freeware audio player for the Windows platform.
Rhythmbox - Rhythmbox is an audio player for Linux that plays and organizes digital music.
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.