Audio Converter is an add-on that help you easily convert an audio format to another.
In order to work with this add-on, simply open the app UI and drag an audio file to the designated area in the app (top section). Then, type your FFmpeg command in the input area and press on the - Run Command - button. Once the conversion is done, the link to download the audio file will be available at the bottom of the UI.
Please note that, conversion may take some time depending on the audio size and also type of the conversion that you choose. There are some sample commands available in the app UI which you can choose to start working with this add-on.
Note: since this add-on runs FFmpeg in the browser, it runs slower than the native FFmpeg applications/library. However, using the add-on is very easy. Simply add it to your browser and it starts to work without any additional plugins. It is only suitable for simple conversions and has limited number of codecs.
This add-on is specifically designed for "audio" conversion. If you want to convert a "video" file, please use my other add-on Video Converter (https://addons.opera.com/en/extensions/details/video-converter/).
Note: in order to report bugs, please fill the bug report form in the addon's homepage (http://mybrowseraddon.com/audio-converter.html).