Setting thumbnail for album art of an audio file does not update the audio file

[programmin]

Go to media library (/wp-admin/upload.php), view audio files, and choose one without an album art.

Go to "Edit More Details" and add a featured-image thumbnail.

Now it shows a thumbnail... but unfortunately if you download it and view it, there is no actual thumbnail within the mp3.

Ideally it should set the album art within the file too. Looks like there is a PHP library for this. ​http://stackoverflow.com/questions/1114357/setting-album-art-of-a-mp3-with-php

[helen]

This sounds really cool but there's something that makes me skittish about the idea of WordPress modifying MP3 files. I wouldn't want core to do it, perhaps something good to see from a plugin, at least at first?

[desrosj]

I agree with @helen. Great idea, but this is plugin material.