Hi

Can anyone please recommend software for Mac OSX that can edit and save mp3s OR export wav or aif files as mp3s?

I want to edit some of the mp3s I've downloaded using Mac OSX. I imagined that this would be a very simple thing to do, but I can't find any software to do this. I've been searching fruitlessly on the web and downloaded all sorts of software, but none of it has worked. I keep coming across something called LAME, but their site isn't working at the moment and I don't really understand what I'm supposed to do with it anyway.

Lily