When i attempt to encode the enclosed video file i get an error the the rate is not specified. I use the following command line:

ffmpeg -i BitratelessAudio.vob -map 0:0 -map 0:2 -map 0:1 -vcodec libtheora -acodec vorbis -ac 2 -ab 128k -f ogg WontWork.ogv -acodec vorbis -ac 2 -ab 128k -newaudio

running through gdb says that the program exited correctly

FFmpeg version SVN-r12497, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --enable-gpl --enable-libtheora --disable-ffserver --enable-decoder=flv --enable-gray
  libavutil version: 49.6.0
  libavcodec version: 51.52.0
  libavformat version: 52.11.0
  libavdevice version: 52.0.0
  built on Mar 25 2008 14:10:03, gcc: 4.2.3 (Ubuntu 4.2.3-2ubuntu6)