The player itself does not use the tags at all, so there is no point in having the player write any tags.

There are plans for emplode to eventually become a full tag editor and MP3 organizer. So it will eventually happen.

In the meantime, if you want to recover tag changes on MP3 files downloaded off of the player, I recommend using Jemplode to retrieve the files and use its filename-formatting features to name them as {artist} - {source} ({year}) - {pos:2} - {title}.mp3. Then use MP3 Tag Studio to retag the files based on the file name.