.YAF

YAF File

Yuke's Audio Archive
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A .yaf file is a Yuke's Audio Archive, a container that game studio Yuke's used to bundle music inside WWE SmackDown! vs. Raw titles from the 2008 to 2011 era. The most common example is music.yaf, which holds wrestler entrance themes and menu tracks stored as .adx or .at3 audio. To open one, use YAF Extractor on Windows to pull out the individual audio files, then decode those with a tool such as vgmstream.

Developer: Yuke's Category: Audio Files MIME: application/octet-stream
OPENS ON Windows
Related: .OPUS · .M3U · .M3U8 · .WFP

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Last reviewed Jul 13, 2026

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What is the YAF file format?

A .yaf file is a Yuke's Audio Archive, a container format built by the game developer Yuke's. It bundles many separate audio tracks into a single file rather than storing sound on its own. YAF archives show up inside WWE SmackDown! vs. Raw games from roughly 2008 to 2011, across PlayStation 2, PlayStation 3, PSP, Xbox 360 and Wii releases. The file you will most often meet is named music.yaf, and it holds the game soundtrack: wrestler entrance themes, menu music and in-match tracks.

Every YAF file starts with the ASCII signature SFAY in its first four bytes. A field near offset 0x18 records how many audio entries the archive contains, and the first audio block usually begins at offset 0x20000. The audio itself is stored as .adx (CRI's game codec) or .at3 (Sony ATRAC3), depending on the platform. In other words, YAF is a wrapper; the real sound lives in those inner streams.

Security & safety

RISK: LOW

A .yaf is passive game data with no code execution, so the archive itself carries no malware risk. The only caution is that extracting and redistributing a game's copyrighted soundtrack is a legal rather than a technical concern. Download YAF Extractor only from established modding communities, since fan tools are not signed.

Format details

in a nutshell
FULL NAMEYuke's Audio Archiveaka Yuke's Audio Files, YAF audio archive
DEVELOPERYuke'ssince 2007
CATEGORYAudio Files
MIME TYPEapplication/octet-stream
TYPEBinary audio archive container
This extension is also used by…
  • YafaRay scene file - Older versions of the YafaRay / YafRay open-source raytracer used .yaf for exported scene description files. Unrelated to game audio.
  • Yet Another Forum (YAF) data - The .NET forum software Yet Another Forum.NET is abbreviated YAF, and the acronym occasionally tags its export or config data. Not an audio format.
MAGIC BYTES · FILE SIGNATURE
OFFSET
00010203
HEX
53464159
ASCII
SFAY
The first four bytes are the ASCII string SFAY (the tag YAFS stored little-endian). It marks the start of every YAF archive.

Programs that open YAF files

Windows3 apps
YAF Extractor Free Open YAF Extractor, choose File then Load File, select your music.yaf, and click Extract All to write out the contained .adx or .at3 tracks; the same tool can repack custom audio back into the archive.
vgmstream (vgmstream-cli / foobar2000 plugin) Open-source After extracting, drop the resulting .adx or .at3 files onto vgmstream to play them or convert them to .wav.
HxD (hex editor) Free Open the .yaf in HxD to confirm the SFAY signature and inspect the header, entry count and audio offsets when a tool cannot parse the file.

Technical details

deep spec
EncodingBinary
Byte orderLittle-endian
ContainerYuke's proprietary audio archive; bundles multiple audio streams behind a header and an index table
SignatureSFAY at offset 0x00 (four ASCII bytes)
Header LayoutBytes 0x00-0x03 hold the SFAY signature. An archive name string follows in the header. A count field near offset 0x18 gives the number of audio entries. The first audio payload usually begins at offset 0x20000.
CompressionNone at the archive level; individual entries are already compressed by their own codec (ADX or ATRAC3)
Stored Audio CodecsCRI ADX and Sony ATRAC3 (AT3), depending on the platform build
Typical ContentIn-game music: wrestler entrance themes, menu music and in-match tracks
Typical sizeTens to hundreds of MB (music.yaf holds a game's entire soundtrack)
StructureFixed signature, header with archive name and entry count, an offset/index region, then concatenated ADX or AT3 audio blobs
PlatformsPlayStation 2, PlayStation 3, PlayStation Portable, Xbox 360, Nintendo Wii
NotesThe recurring filename is music.yaf, shipped inside WWE SmackDown! vs. Raw 2008 through 2011. YAF is an archive wrapper, not a codec: the actual sound is ADX or AT3 data held inside.
Released2007
Specificationsmacktalks.org

YAF conversions

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Frequently asked questions

What program opens a YAF file?
On Windows, YAF Extractor opens and unpacks .yaf archives. It extracts the .adx or .at3 audio inside, which you can then play or convert with vgmstream.
What game uses music.yaf?
The music.yaf file ships inside WWE SmackDown! vs. Raw titles from about 2008 through 2011, on PlayStation 2, PlayStation 3, PSP, Xbox 360 and Wii. It holds the game's entrance and menu music.
Can I convert a YAF file to MP3?
Not in one step. Extract the archive with YAF Extractor, decode the resulting ADX or AT3 tracks to .wav using vgmstream, then encode those to .mp3 with FFmpeg or Audacity.
How do I know a file is a real YAF archive?
Open it in a hex editor such as HxD and check the first four bytes. A genuine YAF file starts with the ASCII text SFAY.
Can I replace the music in a WWE game?
Yes. YAF Extractor can repack custom audio into the archive so you can swap entrance or menu themes, which is the main reason the modding community uses the format.
Is a YAF file dangerous to open?
The archive is inert data and cannot run code, so it is safe to inspect. Only download the extraction tool from a trusted modding source.

References

1FileInfo - .YAF File Extensionfileinfo.com
2Smacktalks.org - YAF (Yuke's Audio Files) File Structuresmacktalks.org

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