Vinyl Music Player - A fork of Phonograph Music Player that "makes all Pro features free, as they used to be".
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
RockPlayer - RockPlayer is a video player that supports nearly all formats.
foobar2000 - An advanced freeware audio player for the Windows platform.
Haihaisoft Universal Player - A powerful media player which supports almost all popular digital media formats and can also play...
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.