FFmpeg_v0.6.2_for_Audacity_on_Windows.zip - FFmpeg 0.6.2 Binary compatible with Audacity 1.3.13 to 2.0.5 only
ffmpeg-win-2.2.2.zip - Binary for Windows, compatible with Audacity 2.0.6 and later (please update, or use v0.6.2 below)