Free audio converter for Mac, Windows [Download AuI ConverteR 48x44]
audio file converter for music production and hi‑end audio

Free audio converter for Mac, Windows [Download AuI ConverteR 48x44]

Free audio converter AuI ConverteR 48x44 FREE is easy to use studio quality software (Mac, Windows 10, 8, 7) for sound files mp3, FLAC, WAV, m4a, AIFF, CD-audio, CUE, APE, ogg, DSF, DFF.  The software is designed for music production and audiophiles.

AuI ConverteR 48x44: audio converter software free download         [Windows]      [   Mac   ]

Full processing quality - Antivirus control by site hosting - Distributive without other installers

AuI ConverteR 48x44 - Free audio converter


Description and general conversion issues


When you use different audio devices (phone, tablet, car audio, portable player, etc.) and software (players, editors), you are stumbled with audio file format compatibility issues. There may be as file type (mp3, m4a, wav, flac) issues as supported resolution audio (sample rate, bit depth) matters.

When you convrert audio files you need to maximally save sound quality. When lossless files converted to other lossless without resolution altering it is not problem. But changing sample rate or bit depth reducing cause distortions. It is recommended to use audio conversion tool that can cause minimal distortions.

High quality settings of the audio converter algorithm are used as default. You no need to alter there something. Simple convert music. However you also can experiment with the settings.


  Online Offline
Location At Internet site At local computer
Need certain operation system No Yes
Speed of processing

Depend on:
- server and its load,
- time to upload and download to/from site is added to conversion time.
- processing quality.

Depend on:
- computer processor,
- processing quality.
File size limitation Depend on software Defined by audio converter, file format and file system. May be issues with files with size more 2 GByte.

Key features

  • Studio audio quality. It's free version of pro software. And you can use it for your music;
  • Easy to use. Simple user interface.
  • Input files:
    - mp3, m4a, flac, wav, flac, aiff, alac, ape, other;
    - DSF, DFF (shorter 3 minutes only).
  • Output files:
    - mp3, m4a, flac, wav, flac, aiff, alac, ape, other;
    - DSF (for input files shorter 3 minutes only).
  • Export metadata during conversion: from m4a; from/to mp3, FLAC, WAV, AIFF, DSF;
  • Editing metadata in single file.
  • Supported operating systems: Mac OSX, Windows 7, Windows 8, Windows 10.
  • The distributive pack without any other installers. The site hosting perform antivirus control of downloads.
  • Friendly technical support.

The AuI ConverteR 48x44's free version have full quality of audio processing, similarly other editions. But, during batch processing in the middle of second and next converted files (in order of original files at input list), 2 second silence is present. For conversion of ISO, DFF, DSF audio files, 2 second silence is present in all converted files.

Limitations in details look here >

Easy user interface [screenshot]

User interface of music converter


Main window of the program show only essential controls. Advanced settings are hidden in several tabs at upper part of the main window and into settings (push Settings button). Using is easy. See "3 Steps Quick Start" below.

You can use the software without additional adjusting of the sound prcessing quality. Because the best quality, by developers' opinion, is set as default. But there are options for audio enthusiasts too. You can experiment to find the best sound for you.

Read more into tutorials.


3 Steps Quick Start

  1. At the main window click Open files button and select input file. Or drag-n-drop files to Source Files white area.
  2. Select target format, sample rate, bit depth at right part of the main window.
        Select target directory at Directory output files field.
  3. Push Start button and wait for end of the work.



Metadata Processing and Editing


During conversion audio files the program transfer metadata (artwork, track, album, performer, year, etc.) from original file to converted one. mp3, FLAC, WAV, AIFF are supported.

Metadata editor support FLAC, WAV, AIFF, DSF .

AuI ConverteR Free support metadata editing of single file. Batch editing supported in PROduce-RD, some configuration of Modula-R editions.



External codecs


AuI ConverteR 48x44 have native support WAV, FLAC, AIFF, DFS (DSF have limitations into FREE edition, read more) files. Other file types are supported via third party command line codecs (decoders and encoders), that should be compatible with the software.

These encoders and decoders are auto downloaded and installed after user confirmation. You can install codec manually.

Read more about external codecs.


Tutorial video: how to use audio converter software free



Other editions of the conversion software


User interface and control of AuI ConverteR is the same for Mac, Windows 10, 8, 7. Design of some interface elements may be distinguished for different operating systems.

Batch conversion PCM to PCM audio files (DSF, DFF, ISO don't supported) is available for Modula-R (Base module), Lite edition.

Batch conversion DSF, DFF, ISO, PCM (WAV, FLAC, AIFF, mp3,...) to PCM (WAV, FLAC, AIFF, mp3,...) audio files (output DSF don't supported) is available for Modula-R editions.

Batch conversion DSF, DFF, ISO, PCM (WAV, FLAC, AIFF, mp3,...) to DSF audio files is available for configurable Modula-R and maximal PROduce-RD editions.

Faster parallel processing of several files (1 file per 1 CPU core) is provided by Modula-R (Parallel modules), PROduce-RD editions.

Metadata editor and album artwork assigning are available for Modula-R (Metadata editor module), PROduce-RD editions.


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