dealerpix, i checked your server. ffmpeg is not properly installed. You need to reinstall ffmpeg.

Code:
[dealerpix@ip-68-178-144-28 ~]$ /usr/local/bin/ffmpeg -i 1.wmv -acodec mp3 -ar 22050 -ab 32 -f flv 1.flv
FFmpeg version SVN-r9144, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --enable-shared
  libavutil version: 49.4.0
  libavcodec version: 51.40.4
  libavformat version: 51.12.1
  built on May 28 2007 19:49:49, gcc: 4.0.2 20051125 (Red Hat 4.0.2-8)

Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 15.00 (15/1)
Input #0, asf, from '1.wmv':
  Duration: 00:00:09.9, start: 5.000000, bitrate: 133 kb/s
  Stream #0.0: Audio: wmav2, 16000 Hz, mono, 16 kb/s
  Stream #0.1: Video: wmv3, yuv420p, 320x240, 134 kb/s, 15.00 fps(r)
Output #0, flv, to '1.flv':
  Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 200 kb/s, 15.00 fps(c)
  Stream #0.1: Audio: 0x0000, 22050 Hz, mono, 0 kb/s
Stream mapping:
  Stream #0.1 -> #0.0
  Stream #0.0 -> #0.1
Unsupported codec for output stream #0.1
[dealerpix@ip-68-178-144-28 ~]$ pwd
/home/dealerpix
[dealerpix@ip-68-178-144-28 ~]$