I've put up a ogg mixdown here:
http://www.diwic.se/music/Diwic%20-%20Wedding%20March.ogg
Notes about that composition:
* It's based on the Earlwood organ (the 3b_313 disposition, IIRC).
* The most difficult thing was the timing: I don't have a pedal board so
I had to record myself twice (pedals and manuals separately). That
doesn't give as good synchronisation as if I had been able to record it
all at the same time. I actually ran it through some midi-to-text
converter to adjust some of the worst timing mistakes.
* It's in mono since I only played it back through one speaker in the
church, and this is just that file converted to ogg format. For the same
reason, there is (almost?) no reverb - when the audience heard the
piece, the listening environment provided all the reverb needed.