If you're not picky about your patches, then you can use this:
timidity -OwS -s 44100 -U -o outfile.wav infile.mid
G'luck....
-- KevinReceived on Sun Apr 17 00:15:04 2005
This archive was generated by hypermail 2.1.8 : Sun Apr 17 2005 - 00:15:05 EEST