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audio file converter software for music production and hi‑end audio
Optimize music files to reach your device’s sound quality limit, get compatible audio format or save disk space. Read more...

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

Audio converter

Sometimes you want to adapt a sound file format for your mobile phone, digital audio player, car stereo, or other music devices. A music file converter software can do it. Free audio converter AuI ConverteR 48x44 FREE is easy-to-use software that provides studio sound quality. Mac [Intel and Apple Silicon], Windows 11, 10, 8, 7 are supported. You can convert audio files mp3, FLAC, WAV, m4a, AIFF, CD-audio, CUE, APE, ogg, DSF, DFF.  The software is designed for music production and audiophiles. Keep reading...

Optimize music files
 to reach your device's sound quality limit,
get compatible audio format or save disk space

AuI ConverteR 48x44
 audio file converter software for
 for music production and descerning music lovers

FLAC, DSF, DFF, SACD ISO, mp3, m4a, CUE, CD...
We think about quality. You just work with music.
AuI ConverteR 48x44 - audio converte software


How to convert audio file format. Quick Start

  1. Start AuI ConverteR software

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



Full processing quality - Antivirus control - Distributive without other installers

AuI ConverteR 48x44 - Free audio converter



When you use different audio devices (phone, tablet, car audio, portable player, etc.) and software (players, editors), you are stumbled upon compatibility issues of audio file format.
There are may be issues like:

When you convert audio files you need to save sound quality maximally. When lossless files are converted to other lossless without resolution altering, it is no problem. But reduction of sample rate or bit depth causes distortions. It is recommended to use an audio conversion tool that can cause minimum distortions.

In AuI ConverteR, high-quality settings of the audio converting algorithm are used as default. You no need to alter something there. Just convert music. However, you also can experiment with the settings.

Read more about sound quality optimization


Online vs offline audio converters
  Online Offline
Location At Internet site At local computer
Certain operation system is need No Yes
Speed of processing

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

Depends on:
- computer processor,
- processing quality.
File size limitation Depends on software and Internet speed Defined by audio converter, file format and file system. Issues with files with size more 4 GByte are possible.



Key features

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

For limitations details look at here >

Easy user interface [screenshot]
User interface of music converter


The main window of the program shows only essential controls. Advanced settings are hidden in several tabs at the 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-processing quality. The best quality, in developer's 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.


Metadata Processing and Editing

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

Metadata editor supports: FLAC, WAV, AIFF, DSF.

AuI ConverteR Free supports metadata editing of a single file. Batch editing is supported in the program editions: PROduce-RD and Modula-R configuartions.


External codecs

AuI ConverteR 48x44 has native support WAV, FLAC, AIFF, DFS (DSF have limitations in 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 such codec manually.

Read more about external codecs...


Tutorial video: how to use audio converter software free



Minimum price options


AuI ConverteR has several price/functionality options that allow saving your budget for the required functionality. You can expand Modula-R abilities later by purchasing new modules. Unlimited-time license, major updates (... 10.x > 11.x > 12.x > ... versions) are paid.

* All prices on this page are in U.S. dollars without V.A.T. and other applicable taxes and fees. The prices are recommended. Information on this page is not a public offer.

ALL-INCLUDED Abilities [PROduce-RD edition]

[MINIMUM PRICE] for full functionality of AuI ConverteR, in comparison with Modula-R edition that is including all modules.

ALL-INCLUDED Abilities [PROduce-RD edition]
Best Seller


All abilities are included in PROduce-RD version. It allows saving budget, comparing purchasing of the full abilities (all modules) of Modula-R edition. Unlimited-time license, paid major updates (... 10.x > 11.x > 12.x ...).

PCM converter [Modula-R edition]

[MINIMUM PRICE] configuration of WAV, FLAC (compressed/uncompressed), AIFF, ALAC (up to 24 bit / 192 kHz), mp3
audio file converter (PCM formats) [consists of 1 module]

PCM converter [Modula-R edition]
Best Seller


Minimum price configuration to conversion PCM files, including CUE splitter. Don't support CD-audio. May be expanded by purchasing of other modules.

Read more articles about converting tools



December 25, 2022 updated | since May 5, 2017