Thanks.
I already tried timidity -ia and -ig options. And currently to use it as Rosegarden output I use timidity -iA -Oj.
In timidity manual there is a -E option to enable some controllers to be recognized. But what I really want to know is when I launch timidity -iA -Oj what else should I type so that timidity recognizes changes in attack, brightness, delay, decay, reverb, chorus and so on.
 
Fernando Martin