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Free mp3 Converter on Mac, Windows [Software] [AuI ConverteR 48x44]

AuI ConverteR 48x44 program is a pro studio converter of SACD ISO, DSF, DFF, WAV, FLAC, AIFF, APE, CUE, ogg, m4a, mp3 audio files and CD-audio. The software is intended for music production and audiophiles.

AuI ConverteR 48x44 FREE may be used as a free mp3 converter for Mac [Intel, Apple Silicon] and Windows. The converter provides professional processing (altering resolution - sample rate, bit depth and dithering) of audio files. mp3 files are coded and decoded via third party codecs, that may be downloaded and installed automatically.

Audiophile mp3 converter software

Free mp3 converter. Download AuI ConverteR 48x44

    for playback music on:
        digital audio player (DAP),
        media server/streamer,
        car stereo.

    Accurate resampling
    Export album artwork from source files or manual assigning to target files
    Easy-to-use software


WARNING: DVD-audio/video, Blu-Ray, DVD/BluRay/CD ISO are NOT supported.
For Modula-R version, SACD ISO, DSF, DFF are supported in proper configurations.
For ISO tracks, DSF, DFF longer than 3 minutes, FREE edition mutes 2-second silence in the output middle and has other restrictions. In batch conversion FREE version mutes 2 seconds in the output middle for second and the subsequent files.
Free version has processing sound quality identical commercial editions.


Watch and share: Free mp3 Converter. How to convert mp3 file



Audio quality

AuI ConverteR is conversion tool to change resolution and format of audio files. It is required for adaptation of audio files for different devices.

The program is designed for:

  • top-level recording studio, and
  • music lover, that are extremely demanding on the audio quality.

Read more about AuI ConverteR's sound quality...


Work with metadata

AuI ConverteR exports metadata (including artworks) from source to converted file .mp3, .wav, .flac, .aiff, .m4a, .dsf.


AuI ConverteR Free has builtin metadata editor of WAV, FLAC, AIFF, DSF audio files. Free edition has a limitation: no group editing of metadata.



mp3 encoders and decoders

Mp3 and other third-party codecs are connected to AuI ConverteR via the command line.  The codecs are auto downloaded and installed after user confirmation.

AuI ConverteR 48x44 processes resolution altering. The codecs convert audio files to/from "native" file types of AuI ConverteR: WAV, AIFF, FLAC, DSF.

Read details about external codecs.

How to set mp3 parameters...


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