newbie problem with percussion

[Brett Duncan]

I'm only new to Lilypond, so this is probably just my own lack of 
knowledge that's causing me grief, but I simply cannot get any 
percussion other than standard drum kit to sound in midi files generated 
by Lilypond. I'm trying to score some Salsa pieces, and want to include 
congas and timbales, but when I play the midi file, they simply aren't 
there.

I noticed that the sample file drums.ly included timbales, so I ran it 
to midi - no timbales, just the standard kit. The timbales do appear on 
the score, but do not sound in the midi file. I then doubled the length 
of the timbales section, so it would continue past the drum kit, just in 
case the timbales were not being heard over the kit - still no timbales, 
and what's more, the midi file stopped right at the end of the kit line 
- there was not even a silence where the timbales were meant to be.

Have I missed a setting somewhere? Or is the problem something outside 
of Lilypond? I'm running version 2.2.2 on Mac OS X (which actually means 
I'm running KDE under Apple's X11 - maybe that's part of the problem?).

TIA

Brett
_____________________
Brett Duncan
address@hidden