mono v1.2.2

mono v1.2.2

What's new

• Detection for ffmpeg and node dependencies on startup
• Ability to download missing dependencies inside mono

Bug fixes

• Fixed relative paths connected to LUFS/BPM/KEY detection

Notes

• Windows x64 only
• No installation required, extract and run mono.exe
• BASS.dll is free for non-commercial use

mono v1.2.1

mono v1.2.1

What's new

• .m4a support

Bug fixes

• debug log no longer needs a hardcoded folder location

Notes

• Windows x64 only

• No installation required — extract and run mono.exe

• BASS.dll is free for non-commercial use

ffmpeg LGPL mirror (BtbN autobuild-2026-06-19-23-17)

Mirror of ffmpeg win64-lgpl build for mono's on-demand installer.

Source: BtbN/FFmpeg-Builds autobuild-2026-06-19-23-17
File: ffmpeg-N-125119-g4bbb7d9b99-win64-lgpl.zip
SHA256: c696f0b89bcfaf8b9ae12f4530f11243167050d504ceeed4db6458a861b4e5c8
License: LGPL 2.1+ (no GPL components)

Hosted here so mono's dependency installer has a stable URL
independent of BtbN's autobuild pruning schedule.

mono v1.2.0

mono v1.2.0

What's new

• essentia bpm + key detection within seconds

Bug fixes

• minor play/pause related issues
• minor playlist related issues

Notes

• Windows x64 only

• No installation required — extract and run mono.exe

• BASS.dll is free for non-commercial use

mono v1.0.0

Initial public release.

Lightweight audio player for music producers that shows the waveform and other info about the files played.
Supports MP3, WAV, and FLAC. Includes BPM, key, and LUFS analysis.

Requirements

• Windows 10/11 x64
• ffmpeg on system PATH (for LUFS analysis)
• Run Assets/Scripts/setup_venv.bat once for BPM and key analysis

mono v1.1.0

mono v1.1.0

What's new

• bpm and key finders are now bundled .exes making installation easier

Bug fixes

• debug log appearing on user's desktop

Notes

• Windows x64 only
• No installation required — extract and run mono.exe
• BASS.dll is free for non-commercial use