File Extension Library

.MUI File Extension

  • Developer by: Myriad Software
  • Category: Audio Files

What is an .MUI file?

.MUI file extension is created by Myriad Software. .MUI has been classified as Audio Files.

.MUI is Myriad User Instrument File

An MUI file is a user instrument file used by Myriad musical notation software products such as Harmony Assistant. It stores sounds for a variety of instruments such as piano, strings, woodwinds, brass. MUI files are used for generating realistic sounds.

MUI file open in Myriad Harmony Assistant

There are many default instruments that come with Harmony Assistant. The instruments consist of a recording of an instrument playing a specific note and parameters to tell the program how it should be played. The MUI file allows users to create instruments other than the default ones by editing an instrument and selecting "Save predefined instrument" in the "Action" contextual menu. The user can also define the parameters of the instruments such as the note range, sound attack rate, decay, volume release, and loop release.

List of all softwares that can open the Myriad User Instrument File
Myriad Harmony Assistant
Myriad Harmony Assistant
Myriad Harmony Assistant
File Type 2 Multilingual User Interface File
Developer by: Microsoft Category: System Files Format: Binary

Resource file used by the Multilingual User Interface component of Windows 2000 and later; contains resources that allow the Windows interface to be changed to different languages.

Many MUI files can be found within the Windows %SystemRoot%\ directory (e.g., %SystemRoot%\en-US\ in Windows 7). They may also be located within specific program installations, such as Windows Journal, Windows Defender, Windows Mail, and other Microsoft Windows programs, including Notepad (notepad.exe.mui).

Additional language packs can be installed in Windows 7 by selecting Control Panel → Clock, Language, and Region → Change display language → Keyboards and Languages and clicking the Install/uninstall languages... button.

List of all softwares that can open the Multilingual User Interface File
Microsoft Windows Multilingual User Interface

How to Open .MUI file on different platforms

Open .MUI File on Windows

  • Right-click a .MUI
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .MUI file and Select check box "Always use this app to open .MUI files" Press "Ok"

Open .MUI File on Mac

  • Right-click (or Ctrl + Left-click) the .MUI file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .MUI File on Linux

Right click on the .MUI file, choose "Open with" and select a program from the list above

Open .MUI File on iPhone

Select a file. If you don't see an application to open the .MUI file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .MUI File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .MUI files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .MUI files

  1. You need to update the application that you normally use to open .MUI files. Only the latest version of the software supports the current .MUI file format
  2. You need to check the .MUI file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)