How do I get WAV files from MP3 files using Winamp?
Press Ctl-P to get Preferences, then select Output in the left hand window, then select Nullsoft Disk Writer plug-in in the left window… then press the Configure button to choose which directory you want your WAV files saving in. After you do this, every time you “play” a file in Winamp, it will actually be output to a WAV file in your chosen directory. To go back to actually playing files, bring Preferences up again, and select Output and Nullsoft WaveOut plug-in, which is your normal sound playing output plugin. The plugins you need should have come as standard with your basic Winamp install.