Foobar2000 is free audio player.

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

JetAudio is a shareware media player application for Microsoft Windows and Android.

Winamp is a media player for Windows, Android, and OS X.

MediaMonkey is a music manager and music player for serious music collectors.

Switch Audio File Converter allows you to convert common file types to a very comprehensive variety of audio output formats.