Listenbox - Podcasts from audio & video on the web
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Audioship - Upload audio to YouTube or Facebook
foobar2000 - An advanced freeware audio player for the Windows platform.
TunesToTube - What does TunesToTube do?
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.