How to Play MMF Files and Convert Them to MP3?

If you have found some default ringtone files saved in .mmf extension from old phones, what might surprise you most is that many major media players can't open and play them at all. So, what's an MMF file? How to play MMF files? Is it possible to convert MMF to MP3 for direct playback and editing? Don't fret, this post covers all you want to know.

Kevincy Kevincy | Updated on Jan 12, 2024

A Brief Introduction to MMF File

Q: "Is there any way to convert a lot of ringtones in .mmf format all at once to MP3 or WAV for example? I know there are a lot of online converters, but they either can convert only 1 file at once or won't recognize this file type. Any suggestions?"

A: Well, MMF is an audio format container that stores Yamaha SMAF data for ringtones using on some old hand-held portable devices, such as mobile phones and PDAs. In a nutshell, MMF is an old audio format commonly used for ringtones, and is incompatible with most modern media players and audio editors on all platforms. That's the reason why many people rummage around the Internet for an MMF player and an MMF file converter. Here, this post will give you a satisfactory answer.

Batch MMF Files Conversion

As a feature-rich A/V processor, HD Video Converter Factory Pro also works as an efficient audio processor, allowing you to batch turn your MMF files to MP3, WAV, FLAC, M4A, OGG, etc. easily. Download this novice-oriented app and give it a shot.

How to Play MMF Files with MidRadio Player?

Yamaha's Mid Radio player is a free mini player that can be used to play back general MIDI files and SMAF (.mmf) files, which were commonly used in the early/mid 2000s with mobile phones. Despite the discontinued update, Yamaha MidRadio Player is still highly recommended to play MMF files on both Windows and Mac OS. Follow the steps to open and play MMF files.

Step 1. Download Yamaha MidRadio Player from the webpage:

Step 2. Click on "ダウンロードページへ" button to open a new webpage. Scroll down and press "同意する" on the bottom of the page.

Step 3. Take an example for Windows users, based on your Windows version, click "ダウンロード" link to download "mr7211.msi" or "mr7211.exe" installer.

Step 4. Run the installer and follow the instructions to complete the installation of Yamaha MidRadio Player. Your MMF file will be automatically associated Yamaha MidRadio Player.

Step 5. Double-click your MMF files to play them in the free MMF player.

Play MMF Files with MMF Player

Note: The problem is, however, Yamaha MidRadio Player doesn't have an official English version. If you are not feeling comfortable with Japanese, I have uploaded an English translation portable version to Google Drive. Simply run the executable file "MidRadioEN.exe" to open the MMF player after unzipping file package, then drag and drop your MMF files onto it.

You can download it here:

(3 Simple Solutions!) How to Convert Your MMF Files to MP3?

Yamaha MidRadio Player is only capable of MMF file playback on computer. But what if you want to play or edit MMF file on other devices or applications? It's a good option to turn MMF files to the universal MP3. Next, I'll show you three simple ways to get the job done.

Way 1. Using HD Video Converter Factory Pro

WonderFox HD Video Converter Factory Pro is first choice because it can be used to play, edit, or transcode MMF files simultaneously. The batch processing mode will save you a lot of time and energy, and the user-friendly interface will impress you a lot. Here's how to use it.

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Step 1. Install and runInstall and run the feature-rich application. Open "Converter".

Step 2. Click on "Add Files" button to add your MMF files, or perform a quick drag-n-drop action.

Step 3. Open output format library on the right side, go to "Audio" category and choose "MP3" profile.

Step 4. Choose a destination folder to save the converted MP3 files at the bottom.

Step 5. Finally, hit "Run" to start converting your MMF files to MP3 in bulk.

Tips. Before start, you're also entitled to open "Parameter settings" to change bitrate, sample rate, channels and volume. Moreover, this program even equips some basic editing features that enable you to trim, split, and join music files easily.

Batch Convert MMF Files to MP3

Way 2. Using Audacity

Audacity is an acclaimed free audio editor that everyone should be familiar with. But Audacity doesn't natively support MMF file unless you have the FFmpeg Import/Export Library is installed. Good news is, LAME MP3 encoder has been built-in with latest version of Audacity as the software patent on LAME encoding library has expired, that is, you're able to import and export MP3 in Audacity without installing LAME library. Here's the walkthrough.

Step 1. Install or update Audacity to the latest version through official website:

Step 2. To convert MMF to MP3 with Audacity, follow the instructions to install FFmpeg Import/Export Library for Audacity: Otherwise, you will run into import failure error.

Step 3. Run Audacity, click "File" > "Open" to load your MMF files, or simply drag and drop them into the interface. It may take a while to load all of them. With the FFmpeg Library installed, you're able to import MMF files to Audacity without a hitch.

Step 4. Now you can edit MMF files as you wish.

Step 5. Click "File" > "Export" > "Export Multiple" to open a new window.

Step 6. Select "MP3 Files" option in the format list.

Step 7. In "Options" section, you're allowed to convert MMF's to 320kbps MP3's or select your preferred quality.

Step 8. Finally, click "Export" > edit MP3 information > "OK" to start conversion.

Convert MMF to MP3 with Audacity

Way 3. Using Online Service

Instead of installing additional software or plug-in, most people prefer to convert MMF files to MP3 online. Unfortunately, not every online audio converter works well for changing the MMF file type. Here, I'll take Audio-Convert as an example for illustrating how to use it.

Step 1. Open the online platform from your browser:

Step 2. Click on the "Upload.MMF" button to select and upload the MMF file from your computer, Dropbox or a URL. You can also drag and drop the MMF file to the white box area.

Step 3. Select "MP3" from the output format drop-down list. And press the "Gear" button to personalize the parameters.

Step 4. Click on the "CONVERT" button to convert MMF to MP3 online.

Step 5. When the conversion process is complete, press the "DOWNLOAD" button to download the converted MP3 file to your computer.

Convert MMF to MP3 Online

Versatile Application

Apart from editing and converting MMF files, HD Video Converter Factory Pro even allows you to Download song/album/mixtape/audiobook from YouTube, Vimeo, SoundCloud and 1000+ sites, record live streams, make GIFs. Get it NOW!

Final Words...

That's all! Now you've figured out what an MMF file is, how to play MMF file and how to convert MMF to MP3 or any other audio format. If you're unlucky to run into an awkward issue that the MMF file won't convert but works in the MMF player, a roundabout solution is to record the audio using HD Video Converter Factory ProHD Video Converter Factory Pro or Audacity while playing MMF files in Yamaha MidRadio Player. Hopefully this post is helpful to deal with MMF files. Your thoughts would be appreciated. Thanks for your reading!

More than a Simple MMF to MP3 Converter
HD Video Converter Factory Pro

WonderFox HD Video Converter Factory Pro

1. Batch convert MMF files to MP3, FLAC, and more.

2. Download music from 1000+ pop sites.

3. Record live music streams, concerts, opera, etc.

4. Trim, split, merge audio files.

5. Compress large-sized audio files.

6. Create ringtones, extract audio from video & more...

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