Emu XL-7 & MP-7 User's Group

Hi.  I'm using LAMP 5.3 w/ Mac OS 9.2.2.....I'm using logic as a 
main Sequencer and XL-7 as a sound module and a controller 
but I can not set up XL-7 as a controller like I want....I want to set 
up XL-7's 16 knobs to control Logic Mixer Fader 1-16 etc.....then I 
switch to another multi setup then XL-7 now controll Logic 
Mixer's Pan 1-16 etc......But right now,  any one of 16 knobs 
control just 1 channel whatever selected in Logic Mixer.......I think 
it can be done....I just don't know how......Will you guys please 
help me out?  Any Logic Users?