Play MMF files in your browser
The ringtone format of Samsung and other feature phones of the 2000s. Play the sound an MMF holds right here, and keep it as MP3.
Or drop it anywhere on this page
What you'll see
Your sound starts playing the moment it opens, its whole waveform across your screen.
- Its whole waveform • Press or drag to jump
- Back and ahead 10 seconds • Half, 1.5× or double speed
- Show tags • Title, artist, album and cover
- Export • Save as MP3 or WAV
About MMF
Yamaha made SMAF for the sound chips in mobile phones, and Samsung and other makers used it for ringtones and sounds in the 2000s. Ringtone sites sold them as .mmf files.
An MMF can hold notes for the phone's synthesizer, recorded sound in ADPCM, or both.
Filepeek decodes the recorded sound with FFmpeg inside your browser and plays it with its waveform. A ringtone made only of synthesizer notes has no recording to play, and Filepeek says so.
Synthetic music Mobile Application Format (SMAF)
.mmf
Format
- MIME type
- application/vnd.smaf
- Made by
- Yamaha
Inside the file
- Audio
- Yamaha ADPCM
- Score
- Notes for the phone's synth
- Made for
- Ringtones
- Made by
- Yamaha's MA chips
Opens in every browser
No browser plays MMF by itself. Filepeek decodes its recorded sound with FFmpeg in Chrome, Edge, Firefox and Safari.
- YouChromePlays through Filepeek
- YouEdgePlays through Filepeek
- YouFirefoxPlays through Filepeek
- YouSafariPlays through Filepeek
Questions
How do I play an MMF ringtone?
Drop it on this page or press Peek an MMF. Its recorded sound plays right away.
Why doesn't my MMF play?
Some ringtones hold only notes for the phone's synthesizer chip, with no recorded sound. Those need the phone to play.
Can I turn it into an MP3?
Yes. Choose Export, then Save as MP3.
Is my recording uploaded?
No. The recording opens inside your browser and never leaves your device.