The only thing this program does not let me do is add lyrics to a MP3. Would be nice if it had a way to add "Lyrics".
AFAIK there is a field for lyrics:
There are several ways to do that, for example:
a) Copy & Paste the Lyrics from the source into the UNSYNCEDLYRICS tag
b) Import a text file into the tag UNSYNCEDLYRICS tag
And not to mention the various web source scripts.