# audiamus/AaxAudioConverter

Convert Audible aax files to mp3 and m4a/m4b

Repository: https://github.com/audiamus/AaxAudioConverter
Canonical: https://ross.abutalabs.com/products/aaxaudioconverter
Language: C#
License: GPL-3.0
License Family: copyleft
Topics: aax, audio-processing, audible, mp3, m4a, aa, audiobook, ffmpeg, m4b
Last push: 2024-06-03T10:04:27+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2734, "days_push": 821, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1847, forks 143 (observed 2026-08-28T04:05:43.597764+00:00)

## What it is
A free, open-source Windows application that converts Audible's proprietary .aax (and older .aa) audiobook files to plain MP3 or M4A/M4B formats using FFmpeg. It preserves chapter metadata, supports splitting by chapter or track length, and runs conversions in parallel across CPU cores.

## Use cases
- convert audible aax audiobooks to mp3
- convert aax to m4b with chapters
- split audiobook into per-chapter files
- remove drm from audible audiobooks
- convert old .aa audible files
- fix chapter marks in audiobook conversions
- make long audiobooks itunes compatible

## When to choose
- you need to convert Audible .aax/.aa files to standard audio formats on Windows
- you want chapter metadata preserved or chapter-based file splitting
- you want a free open-source alternative with parallel conversion performance

## When to avoid
- you need conversion on macOS or Linux - this is a Windows-only application
- you want a command-line or scripted batch tool rather than a GUI
- you need to download books directly without Book Lib Connect, Audible Manager, or an activation code

## Facets
- artifact type: application
- maturity: active
- function: audio-processing, file-system
- domain: media, desktop-applications
- platform: windows
- tags: audible, aax, audiobook-converter, drm-removal, ffmpeg, mp3, m4b, chapter-splitting, audio, desktop

## Member repositories
- audiamus/AaxAudioConverter (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:43.597764+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:17:50.126685+00:00, confidence not recorded.
  - readme: https://github.com/audiamus/AaxAudioConverter (fetched 2026-08-28T04:05:43.597764+00:00, sha 62c2a0744443)
- Data as of 2026-08-30T08:39:29.467469+00:00.