hi,
i don't know how timidity comes as it's default
im goint to assume the patches
http://www.stardate.bc.ca/eawpatches/html/default.htm
are what you mean
so if i have that wrong ask back and i can tell you how to use those
you can also use soundfonts like the ones you load into your souncard
(unfortunately for you only in windows)
just backup your /usr/share/timidity/timidity.cfg
and have it just be one line
soundfont /usr/share/sounds/sf2/Vintage_Dreams_Waves_v2.sf2
you know -- fix path to point to actual sf2 file
i bet you can find a good set of soundfonts on you soundcards windows install cd
the ones you find on the net can be real crap