Just a heads up. I fixed a few bugs and made some improvements and also fixed support for reading tags for the most common formats as it was a bit buggy here and there but now it should work. And doing that I needed to edit tags for some files but couldn't find an app with support for doing that so I implemented that too in panucci. So now there should be full read/write support for title, artist, album and cover tags for mp3, mp4/m4a, ogg, opus, and flac ... if you can find it.