I have a small installation program which installs the frauhenhofer mp3 codec as part of windows - this allows you to load and save mp3 in any windows audio program (e.g. cooledit, soundforge, wavelab). It makes very nice quality mp3s and encodes them quickly as well (obviously depending on the speed of your PC). It's only a small-ish installation file, if you want it let me know and I'll email it when I'm back at home.