How do you convert WAV Audacity songs to MP3 to put on myspace

I made a thread just ilke this but no one helped me well.

I've tried over and over again to downloading these stupid Audacity files to myspace but myspace always says it should be an MP3, and you guys said that iTunes automatically made it an MP3 file.

Please guys, so many people are dying for me to put new songs on my myspace.

btw, i dont want to pay for any programs. 

Load the WAV file in Audacity and then click export, then save as an .mp3.