http://sbooth.org/Max/
Max can generate audio in over 20 compressed and uncompressed formats including MP3, Ogg Vorbis, FLAC, AAC, Apple Lossless, Monkey's Audio, WavPack, Speex, AIFF, and WAVE.
Max is integrated with MusicBrainz to permit automatic retrieval of compact disc information. For MP3, FLAC, Ogg FLAC, Ogg Vorbis, Monkey's Audio, WavPack, AAC and Apple Lossless files Max will write this metadata to the output.
