YAAC (Yet Another Audio Converter) is a free, open-source (GPL), wrapper around SoX, LAME, OggEnc, and flac, supporting the following formats: aiff, au, avr, cdr, cvs, dat, flac, mp3, ogg, sf, smp, snd, wav, raw, 8svx. What's New
Version 1.0: Release notes were unavailable when this listing was updated. Requirements
PPC, Mac OS X 10.3 or later
Source code available here.