MiniLyrics can store lyrics only in mp3, I think. So, for me this option is unusable. On the other hand I'd like to have controll on what is saved in my files, so in any case this is not useful.
It would be very useful if you implement the possibility to check one folder for the lyrics, though (the default setting in MinLyrics). But in this case you have to search for lyrics with the same song name (which contains also artist name) instead of same filename (imagine all your CDs are ripped as Track01, Track02 etc).
Edit: And, you can check MiniLyric.ini for correct download path, just to avoid mistakes with renamed/changed directories etc.