FF Multi Converter is a simple graphical application which converts audio, video, image, and document files between all popular formats, using and combining other programs. It uses ffmpeg for audio/video files, unoconv for document files, and the PythonMagick library for image file conversions.
Pavtube Video Converter for Mac is an application that converts video, audio, and images on Mac. It supports Flash video, HD video formats, images, and common formats like AVI, MPEG, WMV, RM, QT, WAV, and more. Bit rate, frame rate, and resolution can be adjusted and videos can be cropped. Various image effects are also supported.
The Ultimate Live Music Audio Converter is an audio conversion tool specifically designed around the file formats used for live music trading. It currently supports conversion of SHN, FLAC, and WAV files to MP3 or Ogg. Advanced features include automatic tagging of files using the contents of a set-list file (MP3, Ogg, and FLAC only), upload of new files into Itunes Library, and scanning directories where new files are downloaded (manual or automatic).