Opening YM Files

The YM file type is primarily associated with Atari ST.

YM	File extension: YM
	File type:	YM2149 Module/Song

What is a YM file

YM files mostly belong to Atari ST by Atari. Format for the YM2149 music chip found on Atari ST and Amstrad CPC series.

How to open YM files

You need a suitable software like Atari ST to open a YM file. You need a suitable software like Atari ST from Atari to open a YM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your YM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a YM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online YM Text Viewer

Choose your .ym file to analyze

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Online File Viewer

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4 Steps to Open an Unknown .YM File

Because .YM files can originate from various programs, they aren't universally openable.

Identify the Source: If received from a retro gaming enthusiast or chiptune composer, it is likely an Atari ST YM2149 Module/Song.
Check the Header: Open the file in a hex editor to inspect the first bytes.
- YM2!, YM3!, or YM6!: Confirms a YM audio file.
- PK: Suggests a renamed ZIP archive.
Use the Original Software: You usually need specialized audio players like STSound, Audio Overload, or VLC media player; if uncertain, ask the sender.
Use this Webpage: Drag and drop your .YM file onto this page to detect its format, extract readable text or metadata, and preview when possible.

Technical Data for YM File Extension

Identifier:

Hex: 59 4D 53 54 80 00 59, ASCII: YMST..Y (provided by TrID database)

Related files:

html, untitled, pdf, jpg, apk, zip, pin, acx, ttp

Mime type:

application/octet-stream

a ym YM2149 Module/Song is a special file format by Atari and should only be edited and saved with the appropriate software.

How to solve problems with YM files

Associate the YM file extension with the correct application.
Update your software that should actually open ym2149 module/songs. Because only the current version supports the latest YM file format. Search, therefore, e.g. on the Atari manufacturer website after an available Atari ST update.
To make sure that your YM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .YM file online - secure, fast, and no downloads needed.