CloudConvert converts your audio files online. Amongst many others, we support MP3, M4A, WAV and WMA. You can use the options to control audio quality and file size.
or drop your file here.
M4B audio files are nearly identical to M4A files. They are usually encoded with the AAC codec. M4A files contain audio books and the file format supports chapters and bookmarking. These files is supported by iTunes or VLC.
M4B ConverterAudio Interchange File Format (AIFF) is a container format for audio files without compression. It was developed by Apple and is similar to the WAV format, which is mainly used on Windows.
AIFF Converter