VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
iTunes - Media player, media library, Internet radio broadcaster, and iPhone device management application
foobar2000 - An advanced freeware audio player for the Windows platform.
Mixupload - Mixupload is an app by Mixupload.
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.
Mocast - Listen to podcasts how you want, when you want, with Mocast.