Oxelon Media Converter is a free program that will let you convert (even by right-clicking) video or audio files between several formats. Video Formats supported: 3GP, 3G2, ASF, AVI, DV, DVD MPEG2, ::More

Audio Extractor for Free will extract the audio part (soundtrack) of a video file and save it as MP3, WAV, OGG and other audio formats. Audio Extractor for Free supports batch conversion. The ::More

XMedia Recode is a free program that will convert several popular audio and video formats; it is mainly created for video jobs rather than audio. The program supports 3GP, 3GPP, 3GPP2, AAC, AC3, ::More

Fre:ac (= Free Audio Converter) is a free program that will help you convert your audio files and rip your CDs. It supports several popular formats and encoders (MP3, MP4/M4A, WMA, Ogg Vorbis, ::More

Winamp is a free media player for Windows (a commercial version is also available), extensible with plugins and skins, featuring graphical sound visualization, playlist editing and a media ::More