I can't encode wma to mp3

[crease_up]

I have just got a mac and am moving all my media over to the mac from my pc. I have been trying but failing to encode wma to mp3.

I'd rather not download WimdowsMediaPlayer on to my beautiful mac

it starts then fails and I get the following error message:

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, asf, from '/Users/James/Documents/LimeWire Downloads/01 Track 1 (stroke).wma':
Duration: 00:00:13.8, start: 1.365000, bitrate: 1765 kb/s
Stream #0.0: Audio: 0x0162, 48000 Hz, stereo, 197 kb/s
Output #0, mp2, to '/Users/James/Documents/LimeWire Downloads/01 Track 1 (stroke).wma.ff.mp3':
Mon Nov 6 21:29:27 GMT 2006
128 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Unsupported codec (id=0) for input stream #0.0

Can anyone help

[Case]

"0x0162" is Windows Media Audio Pro, which is unsupported by the ffmpeg engine. Also unsupported by mplayer, VLC and Flip4Mac.