AIFF MP3 Converter for to mp4 - Version 4.39 AIFF MP3 Converter converts AIFF file to MP3 and WAV format. AIFF files generally end with a .aif, .aiff or .aifc extension.AIFF MP3 Converter can encode MP3 and WAV with different encoding parameters (e.g. sample frequency, bit rate and channels). This means it can convert a large-size AIFF file to a small-size MP3 and WAV file.The software also supports batch conversion. You can add multiple AIFF files and then convert them to MP3 or WAV in batch