Accessible Digital Textbook: Jiografia na Mazingira, Darasa la Tano
# Jiografia na Mazingira — Darasa la Tano
Accessible Digital Textbook (ADT) in Swahili (`sw-TZ`).
Live site:
## Updating audio
GitHub Pages uses the compressed MP3 files. Original WAV files remain local and are ignored by Git.
After replacing a WAV file, regenerate its matching MP3 while keeping the same basename:
```bash
ffmpeg -i content/i18n/sw-TZ/audio/example.wav \
-codec:a libmp3lame -b:a 64k \
content/i18n/sw-TZ/audio/example.mp3
```
Then commit and push the changed MP3 file.