Shaving mp3s?

[Hart Larry]

Last evening I recorded an mp3 of the VOA stream of the Vice-Presidential 
Debate.  However, I would like to shave the first 2 minites and 49 seconds off. 
I know in windows there is mp3trim.  What commandline or editing tool can I use 
in Linux to do this?  Right now I have speakup with a Dectalk pc.  As an 
alternative, if I can arrow left-and-right through the file like in mytrplayer, 
then delete from there up or down.  Thanks so much in advance
Hart