D:\Users\User\Documents\Visual Studio 2010\Projects\Converter\ConversionTests>ffmpeg -i source.ogg output\ogg.mp3
ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec 12 2011 15:34:57 with gcc 4.6.1
  configuration: --enable-gpl
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 42. 0 / 53. 42. 0
  libavformat  53. 24. 0 / 53. 24. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, ogg, from 'source.ogg':
  Duration: 00:00:10.17, start: 0.000000, bitrate: 106 kb/s
    Stream #0:0: Audio: vorbis, 44100 Hz, stereo, s16, 160 kb/s
Output #0, mp3, to 'output\ogg.mp3':
    Stream #0:0: Audio: none, 44100 Hz, stereo, s16, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (vorbis -> ?)
Encoder (codec none) not found for output stream #0:0

D:\Users\User\Documents\Visual Studio 2010\Projects\Converter\ConversionTests>ffmpeg -i source.wav output\wav.mp3
ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec 12 2011 15:34:57 with gcc 4.6.1
  configuration: --enable-gpl
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 42. 0 / 53. 42. 0
  libavformat  53. 24. 0 / 53. 24. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Input #0, wav, from 'source.wav':
  Duration: 00:00:00.16, bitrate: 90 kb/s
    Stream #0:0: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 11025 Hz, 1 channels, u8, 88 kb/s
Output #0, mp3, to 'output\wav.mp3':
    Stream #0:0: Audio: none, 11025 Hz, 1 channels, u8, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_u8 -> ?)
Encoder (codec none) not found for output stream #0:0

D:\Users\User\Documents\Visual Studio 2010\Projects\Converter\ConversionTests>