Foobar2000 is free audio player.

1by1 is a small, fast and handy audio player which is not only small: it provides a smart and versatile environment to handle your file collection.

Madsonic is a web-based media library and media streamer with jukebox functionality.

AIMP is a free audio player with support for a large number of formats and playlists.

WavePad works as a wav or mp3 editor, but it also supports a number of other file formats including vox, gsm, wma, real audio, au, aif, flac, ogg, and more.

7digital is a digital music and radio services platform.