If you use Razorlame 1.1.5 (http://www.dors.de/razorlame/) as a frontend for lame.exe, you will need to use the Razorlame.dat file included in this archive or Razorlame will generate errors while encoding. Simply copy the .dat file from this .zip file to your Razorlame directory, making sure to overwrite your old version. Everything should work fine then.