mp3infp 2.55 is a free, open-source add-on that puts a tag editor inside the Properties window of Windows File Explorer for MP3, M4A, WMA and Ogg files, last updated in 2018, with Mp3tag as the maintained alternative.
- Updated
- Size
- 894KB
- Downloads
- 26.4K
mp3infp adds a tag tab to the Properties window in Windows File Explorer, so you can read and edit a song's details without opening another program.
Development stopped in October 2018 with version 2.55, so this is a frozen tool that still does one narrow job well.
If you want an editor that is still maintained, Mp3tag is the one most people should pick instead.
What mp3infp Actually Does
Right-click a music file, choose Properties, and an extra mp3infp tab shows its tags - title, artist, album, track, year and more - in boxes you can edit and save. Hover over a supported file and a tooltip shows the same details.
Inside the tab, a right-click menu copies all of a file's tags and pastes them into another, which saves retyping album details. There are also small play and stop buttons that hand the file to Winamp.
For MP3 files it reads and writes all the common tag types: ID3v1, ID3v2 (versions 2.2, 2.3 and 2.4), APE tags and the RIFF tag format that some Japanese players used. It shows the technical side too, such as bitrate, sample rate and length.
Formats It Understands
| Format | File extensions |
|---|---|
| MPEG audio | .mp3, .mp2, .mp1, .rmp |
| MP4 audio and video | .m4a, .mp4, .m4v, .3gp, .3g2 |
| Windows Media | .wma, .wmv, .asf |
| Ogg Vorbis | .ogg |
| Monkey's Audio | .ape |
| TwinVQ | .vqf |
| WAV and AVI | .wav, .avi (AVI 1.0 and OpenDML AVI 2.0) |
| Playlists | .m3u, .m3u8 |
Notice what is missing: FLAC, Opus and AIFF never made the list, and they never will now. For those, see the alternatives further down.
Who Made It, and Why It Says mp3infp/u
The original mp3infp was written by the Japanese developer T-Matsuo between 1998 and 2007. The version here is mp3infp/u, a fork maintained by K.Takata, with the 64-bit work done by a developer known as Rem.
The fork added Unicode support, so file names and tags in any language display correctly, plus 64-bit Windows and Windows 7 to 10. It is open source under the LGPL licence and costs nothing.
What Version 2.55 Changed
Version 2.55 was released on 23 October 2018, after three betas earlier that year. It is the final release.
- New tag fields. Album artist for MP3, MP4 and Ogg files, disc numbers, and full dates instead of just a year.
- Correct ID3v2.4 files. A long-standing bug in how ID3v2.4 tags were saved is fixed, and older files are corrected when you save them again.
- Settings app. The configuration moved out of Control Panel into a normal program called mp3infp configuration.
- New installer. A modern installer with sharp text on high-resolution screens, in English or Japanese.
- Smaller fixes. Pasted genres now stick in ID3v1 tags, and HE-AAC files in MP4 show their real sample rate.
One catch with ID3v2.4. Files saved by 2.55 with the ID3v2.4 "unsync" option follow the standard properly, but older mp3infp versions and programs built on them may no longer read them.
Which Download to Pick
Get mp3infpu255.exe, the installer. On 64-bit Windows it installs both the 64-bit and 32-bit versions, so the tab appears in File Explorer and in the file windows of older 32-bit programs.
The mp3infpu_dll_255.7z archive holds only the program library, for developers who want to read tags from their own software. The 2.54j2 and 2.55 beta files are older builds kept for reference.
Windows Compatibility
mp3infp officially supports Windows 7, 8, 8.1 and 10. It was finished three years before Windows 11 existed, so its developer never tested it there.
It runs inside File Explorer itself, so if Explorer freezes or closes when you open a file's Properties after installing it, uninstall mp3infp from Settings, Apps. The extra Explorer columns it offered in the Windows XP days no longer work on Vista or later.
Who Should Look Elsewhere
The tell is a folder of FLAC or Opus files, or a whole album to fix at once. mp3infp works one file at a time in a Properties window, and it cannot read the newer formats at all.
For quick single-file edits you may not need anything: on Windows 10 and 11, the Details tab in a file's Properties window can already change the title, artist and album of an MP3. For anything bigger, these free, maintained tools do the job better:
| Tool | Pick it when |
|---|---|
| Mp3tag | You want to edit many files at once and pull album details from online databases |
| MusicBrainz Picard | Your files have no tags at all and need to be identified by how they sound |
| Kid3 | You tag FLAC, M4A and MP3 side by side, or need the same tool on Windows, Mac and Linux |
| TagScanner | You want to rename and sort files into folders based on their tags |
| MediaMonkey | You want a full music library manager with tagging built in |
If what you liked was seeing details inside File Explorer, Icaros adds thumbnails and file details there for formats Windows does not read on its own.
Music players can tag too: foobar2000 and MusicBee both edit tags straight from the playlist.
Related Tools for Your Music Files
To see exactly what is inside a file, including codec, bitrate and every tag, open it in MediaInfo, or drop it into the online Codec Finder.
If some songs play much louder than others, MP3Gain evens out the volume without re-encoding. More tools like these sit in the media managers category.
Quick questions
Is mp3infp still being developed?
No. The last release, 2.55, came out in October 2018, and the project has had no updates since.
Does mp3infp work on Windows 11?
It was built for Windows 7 to 10 and never officially tested on Windows 11. If it misbehaves there, use a maintained editor such as Mp3tag instead.
Can mp3infp edit FLAC tags?
No. It handles MP3, MP4, WMA, Ogg Vorbis, APE, WAV and a few older formats, but not FLAC, Opus or AIFF.
Is mp3infp free?
Yes. It is open source under the LGPL licence, with no paid version.
Where do I find the tag editor after installing?
Right-click a supported file in File Explorer, choose Properties, and open the mp3infp tab. Settings live in a separate program called mp3infp configuration.
How do I remove mp3infp?
Uninstall it from Settings, Apps like any other program. Sign out or restart afterwards so File Explorer lets go of it completely.
Download mp3infp 2.55 if you still need it, or tell us what you used it for if you have history with it.
Available files
- mp3infp 2.55WindowsInstaller894 KB
- mp3infp 2.55 - dll filesArchive507 KB
- mp3infp 2.54j2WindowsInstaller868 KB
- mp3infp 2.55 betaWindows32-bitInstaller913 KB
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