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FLAC CUE Splitter | Mac Windows | Read Definitive Guide >

Music albums may be provided as big file that contains all tracks and these tracks are described in a cue-sheet file. It is text file that points to track begins and contains song info (metadata).
Audiophile FLAC CUE splitter AuI ConverteR 48x44 [Mac, Windows] cut big audio files with 1 sample precision by *.cue index (musical albums) to separate files (tracks) .flac, .mp3, .wav, .dsf and other. Big files WAV, DSF, DFF, APE, WavePack (.wv), mp3 are supported too. Metadata (song information) from *.cue are exported to target files. AuI ConverteR is able to manually assign album artwork to target files. Bit-perfect splitting (without quality losses) is available for lossless to lossless file conversion.


Author: Yuri Korzunov,
Audiophile Inventory's developer with 25+ year experience in digital signal processing,
author of the articles that make audio easy for beginners

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How to split FLAC CUE

To split FLAC CUE musical album into several tracks [audio files] with 1 sample precision:

  1. Launch AuI ConverteR software
  2. In the main window, push Open files button and select only CUE file (don't select FLAC file).
    Select CUE file for convert


  3. For splitting FLAC by CUE's time scores in bit-perfect mode (binary content of source and target files is identical, no quality losses):

    Select lossless target PCM format (FLAC, WAV, AIFF), sample rate and bit depth identical input file or set "as input"

    Output FLAC file sample rate and bit depth


    In Settings window > General tab, Don't make DSP... switch should be checked


    bit perfect

    Read more about sound quality for CUE split below.


  4. Set output file path and template (read more).
  5. Launch splitting CUE + FLAC by click Start button.



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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.

WARNING: Modula-R modules (parts of AuI ConverteR’s functionality) are NOT compatible with Free version.
ADD-ON modules work with certain CORE modules only (see details).
The module is license key received in order email. To activate module functionality, enter its key in Modula-R executable.
All "Modula-R" modules together have "PROduce-RD"'s abilities.
Full-featured "PROduce-RD" version is like a discount on price of full module kit of "Modula-R" version.

To expand functionality, module(s) (compatible with purchased major version number) may be ordered separately.
Modula-R license cannot be replaced with PROduce-RD.

* 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.



Watch and share: How to split CUE FLAC
How to split CUE FLAC video



Audiophile DSF DFF FLAC other + CUE Splitter
to FLAC, WAV, DSF, mp3, DSF, DFF,...

FLAC CUE splitter

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

    Accurate split with 1 sample precision
    Bit-perfect splitting (without quality losses)
    Multichannel and stereo
    FLAC resolution up to 32 bit | 352/384 kHz
    Clickless technologies
    Auto and manual artwork 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
Free version has processing sound quality identical commercial editions.

* 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.

Look at minimum price option >


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  1. When you open directory with *.cue file, AuI ConverteR automatically add CUE-sheet file into input-file list. Other audio files from .cue's directory are not added (in the latest versions).
  2. If you open audio file in a directory, use Open files button and select only audio file(s) (not *.cue). If you select file and cue, cue will be added only.


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Sound quality


Bit perfect splitting

Bit-perfect splitting means output files have the binary content same as well as the input files. And in doing so, such splitting doesn't cause losses.

Processing that causes losses:

  • resampling;
  • lossless file (WAV, FLAC, DSF) is converted to lossy (mp3, AAC, etc.);
  • DSD files are converted to PCM or back.

For AuI ConverteR, if bit depth is increased, there are no quality losses. Examples: 16 to 24 or 32 bit, 24 to 32 bit)

Read also: Best audio file format >


Accurate split with 1 sample precision

Decoding and reencoding of FLAC files are lossless actions.


But, without decoding and reencoding, FLAC file may be split into frames. Here, the frame is a block of samples.

The frame may include data from neighbor tracks simultaneously.

It can cause the placement of fragment of the next track to the end of file with the previous track.


To avoid the issue, AuI ConverteR splits files by marks into cue-file with precision 1 sample (exact track border) without quality losses.

When mp3 (or other lossy) audio file is split to mp3 (or other lossy), to split with 1 sample precision there is re-encoding is required. And target files have some losses шт comparison with original stuff. Are the losses audible or not, we can't say exactly.

Splitting per 1 sample may be more desirable, when splitting per audio data block causes sound penetration of the next track's begin to the end of the previous track.


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Splitting artefact elimination

To minimize splitting artefacts, in the main window of AuI ConverteR > Parameters tab, True Gapless Mode switch should be checked (if available in your configuration)

CUE split resampling


In Settings window, Don't make DSP... switch should be checked.

In True Gapless Mode files are processed sequentially. It's defined by the necessity of connecting neighbor files borders.

Free version inserts two-second pauses into 2nd and next tracks.



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What is a cue file flac?

Here, we can discuss pair of files:

  • big FLAC file;
  • .cue [cue-sheet] file with time scores inside this FLAC file.

These scores mark borders between tracks, including pauses. Also, the cue-sheet file contains track name, performer and other metadata, that are displayed by an audio player software.



As rule, .cue and .flac files should have similar file names. Otherwise, AuI ConverteR try to find an appropriate big audio file automatically.

Warning: In version earlier 9.2, before CUE + other than FLAC, WAV, AIFF, DSF file, open this file type directly to auto downloading and installing of codec.


Wrong symbols in converted files

If converted files contain wrong symbols in:
- text metadata (album, performer, track name, etc.) or
- file name,
in Settings > Metadata, select a proper value in "CUE file encoding" list ("Local" is default value).


Hi-Fi FLAC CUE splitter software


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Frequently asked questions


How do you split cue files on a Mac?

Read how to split cue files on Mac...


What does a .CUE file do?

.CUE file (CUE sheet file) is a file that contains time marks of track borders into a big audio file. Read more...


What is CUE file in FLAC?

FLAC file may contain CUE scores in metadata.



How do you split a FLAC with a cue? How do I split a FLAC file with CUE?

Read this step-by-step guide...


How do I split cue files into tracks?

Read how you can split .cue files into tracks...


Can you split a FLAC file without a CUE file?

You can ether use an audio editor sofware
create CUE-file, put it into the FLAC directory and split it.


How do I split a WAV file on a Mac?

You can split WAV file by indexes written  in a .cue file. Read here...


How do you split cue files? How do you split a cue file?

Read the manual on how to split audio file with cue...


How do I split an MP3 into multiple songs on a Mac? How do I split a large MP3 file into separate tracks?

Before splitting create .cue file with time scores of splitting.

Read the guide on how to split mp3-audio file with cue...


What is the best cue splitter?

There are no single criteria for everybody.

When you look for the best cue splitter for you, you can pay attention to these important things:


How do I trim FLAC files on a Mac?

You can trim FLAC files with audio editor software. As example: iZotope RX, Audacity.

Also, you can split big FLAC to audio files (tracks)...


How do I extract APE files?

You can extract a big .ape file with .cue like it's described in this guide...


Can Audacity automatically split tracks?

Yes. You can automatically split track (opened audio file) via Audacity menu Analyze > Label Sounds...

After part detection, select menu File > Export > Export Multiple...



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Read more

  1. FLAC to ALAC
  2. FLAC TO MP3
  3. Audio converters
  4. ISO to FLAC
  5. DSF to FLAC
  6. DFF to FLAC
  7. FLAC 32 bit
  8. Uncompressed FLAC
  9. FLAC general description




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