I have been using Audacity for many years and have never had an issue with exporting MP3s. However, today I recorded and converted several tracks and when I go to listen to the converted fine (Mp3 or WAV) in any other programs, it is completely silent. I can open the Mp3 and WAV in audacity, but that is the only program that will play any audio. I even uploaded a track to a site and again, just silence. I uninstalled and reinstalled Audacity and LAME and no progress. Really need these tracks for work, please help!