VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Minitube - Minitube is a YouTube desktop application.
foobar2000 - An advanced freeware audio player for the Windows platform.
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.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
MusicBee - While iTunes might be the benchmark music organizer and player app, MusicBee is a strong alternative that many prefer.