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

1) Is there a way to have the knobs not change an effect when you 
turn it? Example:on my RS7000 you can press 'shift' and whatever knob 
(vol,lfo,etc) and it wont effect it, so say if Im in a show playing a 
track with a high LFO and I swicth to mess with another track with a 
low, it wont suddenly jump to the high setting.

2) And is there a way to turn a trach back to its default recorded 
sound without me just having to remember wht it was? Example:I have 
a  midi track that I initialy recorded using a piano sound but scroll 
to other sounds to expierment and forget what piano I first recorded?

3)Last, Im still trying to learn about MIDI and Ive got my 
instruments to where I can have 1 track (on one Synth) playing 1 
sound (on my E Mu)..Is it possible with one MIDI cord to set up say 
16 MIDI channels(from my keyboard) to play 16 different sounds from 
my E Mu.

Thank you to anyone who can help me out!!!!!