Free Audio Video Pack is a collection of portable video and audio converters which helps you to convert between all most popular audio and video formats like AVI, MPG, MP4, MP3, WAV, FLAC, AAC, MOV, WebM, WMV, WMA, OGG, WebM, FLV, OGV, 3GP. It is a freeware converting application.
Here are some screenshots to illustrate the features and user interface of this application:
Monkey's Audio
xrecode III
MP3Gain
Sothink Free Video Converter
Stereo Tool