A123 Audio to MP3 AMR AAC OGG Converter - Version 6.7 A123 Audio to MP3 AMR AAC OGG Converter is a powerful and easy to use audio conversion tool which can convert among MP3, AAC, AC3, AMR, M4A, OGG, WAV audio formats. It Batch conversion supported and you can convert more files within one time. With A123 Audio to MP3 AMR AAC OGG Converter, you will get any output formats you want with excellent quality.