@jonas mp3, flac
I also noticed today that if I click "edit track information", the comment under "Tags" is the one I entered. But if I see the comment under the Playlist, its a different one. Once I click the track, the comment I entered appears, once the track changes, I get another comment (either blank or one not made by me). Seems like the tag is reading a comment from 2 different sources.
The comment that appears not entered by me, I dont know where its coming from, its not under any tag under "edit track information"
I am going to install mp3tag to check where it might be coming from.