M4A Manager Recorder - Version 2.1.50 M4A Manager Recorder can convert audio between popular audio files such as MP3, AAC, AC3, AMR, M4A, OGG and WAV. It provides an easy and completed way to convert MP3 to AAC, AC3 to AAC, AMR to MP3, etc. M4A Manager Recorder supported Batch conversion and you can convert more files within one time. M4A Manager Recorder is a necessary audio tool for most music lovers. Convert between popular audio files such as MP3, AAC, AC3, AMR, M4A, OGG and WAV.