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SoXmpg123
Free

Free and open source under GPL-2.0 and LGPL licences.

 Free

Free software under the LGPL 2.1.

Windows, macOS, Linux, Command line Windows, macOS, Linux, Command line
  • Converts between many audio file formats
  • Applies effects and filters during conversion
  • Lightweight console MP3 playback
  • Runtime-selected assembly optimizations for x86, x86-64 and ARM
  • Command line only, with no graphical interface
  • Infrequent releases
  • Command-line only, no graphical interface
  • Focused on MPEG audio rather than every audio format
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0-or-later AND LGPL-2.1-or-later License: LGPL-2.1-only
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.