AUAU-Soft AMR to MP3 Converter - Version 1.0 AUAU-Soft AMR MP3 OGG Converter provides an easy and completed way to convert WAV to M4A, M4A to MP3, AAC to MP3, etc, convert audio between popular audio files, such as WAV, OGG, AAC, MP3, M4A, AC3 etc. All conversion processes such as M4A to MP3 and AAC to MP3 converting are very easy to handle with super fast speed.