Ok - I think I know what your getting at.
The fonts that people have made available don't seem to have an accompanying sound to go on the menu, unfortunately, so you need to replace it with one of your own. So if it corresponds with the font that's in the folder "bank2", your sound for that bank/font in the menu will replace the file named "two" that you see, when you look on the CF card (along with rest of the menu sound files "one" to "six", "menu", "menubgnd", "player" and the folders "bank1", etc). The sound file you've used to replace the original menu sound file "two" will also need to be called "two".