In Logic 5.3 there are 3 (!) ways to do the "up/down" or "next/previous" job
for EXS instruments.
1) Setup a separate MIDI message in the EXS editor's preference Window. This
is what I use to do. I don't use any internal programs of my SY85 anymore,
so I can just reserve Prg.Change "0" and "1" for "previous/next".
Disadvantage: Aoesn't give you access to the plugin settings you may have
used. You can also only use this as soon as you have an EXS track activated,
so there might be some danger of using it on another track, accidentally
changing programs there. But if you are used to standard MIDI instruments
that should be no problem.
2) Setup a KC for "next/previous" EXS instrument in your keycommands
section.
Disadvantage: Again it won't let you access any possible plugin settings and
you also have to use your computer KB.
Advantage: Also works if the EXS isn't the activated track (requires the EXS
GUI to be the active window).
3) Setup a KC for "next/previous" plugin setting.
Disadvantages: Again you need to use your computer KB. No display of the
plugin setting in the blue title bar (I wonder why, there's no reason).
You'd need to save all your patches as plugin settings as well (way too much
work).
Advantage: Works like this with all plugins (and all other plugins even
display their setting, great improvement that came with 5.2).
I recommend trying method 1), but method 2) might not be a bad choice either
(you can even use all methods happily together).
Regards,
Sascha