The OpenMPT/libopenmpt project released the latest stable libopenmpt version:

libopenmpt 0.5.10 (2021-07-04)

  • S3M: Honor the Stereo flag not being set. This improves the sound of some tunes like Turbulence by Purple Motion.
  • S3M: Detect MPT 1.0 alpha versions which didn’t set the Stereo flag. In this case, the unset Stereo flag is also ignored because MPT 1.0 alpha used the default S3M channel panning anyway.
  • S3M: Only for OPL instruments the high sample rate bits should be ignored; for PCM instruments they are clamped to 65535 Hz.
  • MOD: Do not apply ProTracker loop length quirk to MODs that could have been made with Scream Tracker (fixes Soul-O-Matic by Purple Motion).
  • AMF (DSMI): Format revisions 1 and 9, as well as early (technically malformed) revision 10 files, are now supported. Surround panning commands and instrument number without note are now converted correctly.
  • AMF (DSMI): Patterns and samples were not read correctly in some files (e.g. AVOID.AMF).
  • GDM: Correctly import extra-fine portamentos.

  • mpg123: Update to v1.28.0 (2021-06-05).
  • ogg: Update to v1.3.5 (2021-06-04).
  • stb_vorbis: Update v1.21 commit 8e51be04dc7dcee462e1f09e410faceab52cc6d2 (2021-07-02).

The changelog for older versions can be found at https://lib.openmpt.org/doc/changelog.html .

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.


The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.4 stable branch:

libopenmpt 0.4.22 (2021-07-04)

  • S3M: Only for OPL instruments the high sample rate bits should be ignored; for PCM instruments they are clamped to 65535 Hz.
  • MOD: Do not apply ProTracker loop length quirk to MODs that could have been made with Scream Tracker (fixes Soul-O-Matic by Purple Motion).
  • AMF (DSMI): Format revisions 1 and 9, as well as early (technically malformed) revision 10 files, are now supported. Surround panning commands and instrument number without note are now converted correctly.
  • AMF (DSMI): Patterns and samples were not read correctly in some files (e.g. AVOID.AMF).
  • GDM: Correctly import extra-fine portamentos.

  • mpg123: Update to v1.28.0 (2021-06-05).
  • ogg: Update to v1.3.5 (2021-06-04).
  • stb_vorbis: Update v1.21 commit 8e51be04dc7dcee462e1f09e410faceab52cc6d2 (2021-07-02).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.


The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.3 stable branch:

libopenmpt 0.3.31 (2021-07-04)

  • S3M: Only for OPL instruments the high sample rate bits should be ignored; for PCM instruments they are clamped to 65535 Hz.
  • MOD: Do not apply ProTracker loop length quirk to MODs that could have been made with Scream Tracker (fixes Soul-O-Matic by Purple Motion).
  • AMF (DSMI): Format revisions 1 and 9, as well as early (technically malformed) revision 10 files, are now supported. Surround panning commands and instrument number without note are now converted correctly.
  • AMF (DSMI): Patterns and samples were not read correctly in some files (e.g. AVOID.AMF).
  • GDM: Correctly import extra-fine portamentos.

  • mpg123: Update to v1.28.0 (2021-06-05).
  • ogg: Update to v1.3.5 (2021-06-04).
  • stb_vorbis: Update v1.21 commit 8e51be04dc7dcee462e1f09e410faceab52cc6d2 (2021-07-02).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.


The following libopenmpt versions are currently supported with security fixes by the OpenMPT/libopenmpt project:

  • 0.5.10
    • Current stable version.
    • Receives security updates.
    • Receives minor playback fixes.
  • 0.4.22
    • Old stable version.
    • Receives security updates.
    • Receives trivial bug fixes.
  • 0.3.31
    • Old stable version.
    • Receives security updates.
    • Receives trivial bug fixes.
  • 0.6 (SVN trunk)
    • development
    • security updates
    • playback fixes
    • new features
    • new file formats

Please update to the newest versions.