# Creating Audio Mods

<p class="callout info">[Updated Information](https://wiki.eternalmods.com/books/eternal-audio-modding/page/creating-audio-mods)</p>

### Legacy - FFmpeg ( SFX &amp; VO ) - Eternal Mod Injector

You need the FFmpeg extension for Audacity to import/export OPUS audio files - [Download](https://lame.buanzo.org/#lamewindl)

1. Install **ffmpeg-win-#.#.#.exe** -&gt; Follow the installation instructions
2. Open Audacity -&gt; Edit -&gt; Preferences -&gt; Libraries
3. FFmpeg Library: Locate... -&gt; Browse... -&gt; Find **avformat-55.dll** -&gt; OK
4. **SFX &amp; VO:** Convert all of the audio you want to export to OPUS.   
    ( Export Audio -&gt; OggOpus - 64 kbps for high quality )

**Be sure to export the OPUS file in either mono or stereo depending on the format of the original file.**

<p class="callout info">Sometimes, Audacity will automatically find avformat-55.dll</p>

<p class="callout warning">If the **exe** version does not work, download the **zip** **option** and extract it into a new folder called **ffmpeg-win-#.#.#** (depending on the version number) and extract all its contents in there. Then attempt to locate FFmpeg.</p>