Recently, I've been trying to improve with my composing skills and music knowledge out of curiousity. What I've come up with this time was something pretty good, and thanks to some pointers from Psygon, I've fixed some odd sounding spots with the timpani, but it still needs more revising.
It's called TiMidity, and though there are good encoders to change it to mp3, TiMidity has some other interesting features. Try running a search on it, because I lost the official website link. That or contact me to see if I still have the install files somewhere.