I have a bunch of songs with bits and piece (not discernible silence or just noise) that I would like to cut off at the end and beginning of the MP3s. It would work well with audacity, but as far as I can tell, that would re-encode the entire MP3. Anyone know of an app that would do what I'm looking for, preferably free?
Also a graph component like Audacity would also be helpful.

A simple search for "mp3 edit" would have resulted in, amongst others, this result:
http://www.hydrogenaudio.org/forums/index....showtopic=30049

Welcome to HA.
(We get this question about several times a day, I guess...)