lame encoding woes

i'm having trouble encoding with grip and lame.  i'm using fc4, i've 
been using linux for about a year or two, and i'm fairly comfortable 
with it.  the grip version i am using is 3.2.0, and the encoder line is 
executable is
*  /usr/bin/lame                                      (encoder executable)
* -h -b %b %w %m                               ( encoder command-line)
* mp3                                                    (encode file 
extension)
 * ~/Opus/%A/(%y) %d/%t %n.ogg      (encode file format)

i do not understand why the encode file format is *.ogg, when i'm using 
lame.  so i  changed it to mp3, that didn't work ... the only difference 
was this:
*  in format extension was ogg, file mp3 was 0 bytes.
*  in format extension was mp3, file mp3 was 128bytes.

by the way i'm encoding at 190 kb's.
i'm using grip (cdparanoia)


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