Category Overview

Audio File Extensions

Audio file extensions are used for music, voice recordings, sound effects, podcasts, and production projects. Explore the formats below to identify an audio file and find compatible playback, editing, or conversion software.

64
Audio Extensions
Category Guide

How to work with audio file extensions

Audio formats vary by codec, compression method, quality, metadata, and application support. Use the exact extension page to identify suitable software, and preserve an original copy before converting or re-encoding an important recording.

Filter Extensions

Filter this category by the first letter of the extension.

64 Audio Extensions Available
.ALS

Ableton Live Set

An ALS file is a project file created by Ableton Live, a professional digital audio workstation (DAW) widely used for music production...

Audio
.NKSF

Native Kontrol Standard Format

The NKSF (Native Kontrol Standard Format) is a proprietary file format developed by Native Instruments to facilitate deep integration b...

Audio
.DLS

Downloadable Sounds

The DLS (Downloadable Sounds) file format is a standard developed by the MIDI Manufacturers Association (MMA) to define a file format f...

Audio
.AUPRESET

Audio Unit Preset File

An AUPRESET file is a configuration file used by Apple's Audio Units (AU) technology, which is a system-level plug-in architecture for...

Audio
.SFZ

SFZ Sample Definition File

The SFZ file format is a royalty-free, open-standard specification for defining the behavior of musical instrument samples within a sof...

Audio
.FLP

FL Studio Project File

The FLP file extension is the native project format for FL Studio, a comprehensive digital audio workstation (DAW) developed by Image-L...

Audio
.NKI

Native Instruments Kontakt Instrument

An NKI file is a proprietary file format developed by Native Instruments for use with their Kontakt software sampler. It serves as a pr...

Audio
.RMI

RIFF MIDI File

A RIFF MIDI (RMI) file is a type of audio file that encapsulates standard MIDI (Musical Instrument Digital Interface) data within a RIF...

Audio
.SESX

Adobe Audition Multitrack Session File

The SESX file extension is the proprietary project format used by Adobe Audition, a professional digital audio workstation (DAW). Intro...

Audio
.OMF

Open Media Framework

The Open Media Framework (OMF) is a platform-independent file format designed for the exchange of digital media between different softw...

Audio
.ES2

Logic Pro ES2 Synthesizer Settings

The ES2 file extension is primarily associated with Apple's Logic Pro and MainStage digital audio workstations. It specifically represe...

Audio
.SF3

SoundFont 3 Audio Bank

SoundFont 3 (SF3) is an open-source file format used for storing digital audio samples and MIDI instrument data. Developed primarily by...

Audio
.FXB

VST Preset Bank

The FXB file extension stands for FX Bank and is a proprietary format developed by Steinberg for use with Virtual Studio Technology (VS...

Audio
.RTTTL

Ring Tone Text Transfer Language

RTTTL, which stands for Ring Tone Text Transfer Language, is a simple text-based format developed by Nokia to specify ringtones for its...

Audio
.NPR

Nuendo Project File

A Nuendo Project File (.npr) is the primary project format used by Steinberg Nuendo, a high-end digital audio workstation (DAW) designe...

Audio
.BNK

Wwise SoundBank File

The BNK file format, primarily known as a Wwise SoundBank, is a proprietary container format developed by Audiokinetic for their Wwise...

Audio
.NKM

Kontakt Multi-Instrument File

The .nkm file extension is a proprietary format developed by Native Instruments for use with its Kontakt software sampler, which is a s...

Audio
.ADX

CRI ADX Audio Format

The ADX file format is a proprietary lossy audio compression format developed by CRI Middleware. It is primarily used in video games, p...

Audio
.NKB

Native Instruments Kontakt Bank

An NKB file is a specialized data format used by Native Instruments Kontakt, which is one of the industry-standard software samplers fo...

Audio
.ST0

Sony Digital Voice File

The ST0 file format is a proprietary audio format primarily associated with older Sony digital voice recorders. It is used to store com...

Audio
.BRSTM

Binary Revolution Stream

The BRSTM (Binary Revolution Stream) file format is a proprietary audio container developed by Nintendo, primarily used in games for th...

Audio
.MID

Musical Instrument Digital Interface

MIDI (Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and el...

Audio
.DSS

Digital Speech Standard

The Digital Speech Standard (DSS) is a proprietary digital audio file format developed jointly by Olympus, Philips, and Grundig as part...

Audio
.WEM

Wwise Encoded Media File

The WEM (Wwise Encoded Media) file format is a proprietary audio format developed by Audiokinetic for use with their Wwise (Wave Works...

Audio
.ALS

Ableton Live Set

An ALS file is a project file created by Ableton Live, a professional digital audio workstation (DAW) widely used for music production, sound design...

.NKSF

Native Kontrol Standard Format

The NKSF (Native Kontrol Standard Format) is a proprietary file format developed by Native Instruments to facilitate deep integration between third-pa...

.DLS

Downloadable Sounds

The DLS (Downloadable Sounds) file format is a standard developed by the MIDI Manufacturers Association (MMA) to define a file format for wavetable sy...

.AUPRESET

Audio Unit Preset File

An AUPRESET file is a configuration file used by Apple's Audio Units (AU) technology, which is a system-level plug-in architecture for audio processin...

.SFZ

SFZ Sample Definition File

The SFZ file format is a royalty-free, open-standard specification for defining the behavior of musical instrument samples within a software sampler...

.FLP

FL Studio Project File

The FLP file extension is the native project format for FL Studio, a comprehensive digital audio workstation (DAW) developed by Image-Line. These file...

.NKI

Native Instruments Kontakt Instrument

An NKI file is a proprietary file format developed by Native Instruments for use with their Kontakt software sampler. It serves as a preset or 'instru...

.RMI

RIFF MIDI File

A RIFF MIDI (RMI) file is a type of audio file that encapsulates standard MIDI (Musical Instrument Digital Interface) data within a RIFF (Resource Int...

.SESX

Adobe Audition Multitrack Session File

The SESX file extension is the proprietary project format used by Adobe Audition, a professional digital audio workstation (DAW). Introduced with vers...

.OMF

Open Media Framework

The Open Media Framework (OMF) is a platform-independent file format designed for the exchange of digital media between different software application...

.ES2

Logic Pro ES2 Synthesizer Settings

The ES2 file extension is primarily associated with Apple's Logic Pro and MainStage digital audio workstations. It specifically represents a preset or...

.SF3

SoundFont 3 Audio Bank

SoundFont 3 (SF3) is an open-source file format used for storing digital audio samples and MIDI instrument data. Developed primarily by the MuseScore...

.FXB

VST Preset Bank

The FXB file extension stands for FX Bank and is a proprietary format developed by Steinberg for use with Virtual Studio Technology (VST) plugins. It...

.RTTTL

Ring Tone Text Transfer Language

RTTTL, which stands for Ring Tone Text Transfer Language, is a simple text-based format developed by Nokia to specify ringtones for its mobile phones...

.NPR

Nuendo Project File

A Nuendo Project File (.npr) is the primary project format used by Steinberg Nuendo, a high-end digital audio workstation (DAW) designed for professio...

.BNK

Wwise SoundBank File

The BNK file format, primarily known as a Wwise SoundBank, is a proprietary container format developed by Audiokinetic for their Wwise audio middlewar...

.NKM

Kontakt Multi-Instrument File

The .nkm file extension is a proprietary format developed by Native Instruments for use with its Kontakt software sampler, which is a standard tool in...

.ADX

CRI ADX Audio Format

The ADX file format is a proprietary lossy audio compression format developed by CRI Middleware. It is primarily used in video games, particularly tho...

.NKB

Native Instruments Kontakt Bank

An NKB file is a specialized data format used by Native Instruments Kontakt, which is one of the industry-standard software samplers for music product...

.ST0

Sony Digital Voice File

The ST0 file format is a proprietary audio format primarily associated with older Sony digital voice recorders. It is used to store compressed voice r...

.BRSTM

Binary Revolution Stream

The BRSTM (Binary Revolution Stream) file format is a proprietary audio container developed by Nintendo, primarily used in games for the Wii and GameC...

.MID

Musical Instrument Digital Interface

MIDI (Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connec...

.DSS

Digital Speech Standard

The Digital Speech Standard (DSS) is a proprietary digital audio file format developed jointly by Olympus, Philips, and Grundig as part of the Interna...

.WEM

Wwise Encoded Media File

The WEM (Wwise Encoded Media) file format is a proprietary audio format developed by Audiokinetic for use with their Wwise (Wave Works Interactive Sou...