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

Hey im sorry about posting so much. I cant figure this f*cking thing 
out for the life of me. 

I have an MP-7 and all I want to do is set some tracks so that when 
they are selected the keyboard is controlling my E5000 sampler. 
MIDI controller --->MP7----->E5000 see then I can record sampler 
sequences with the MP7 and trigger them as tracks. 

If **ANYONE** could walk me through the MIDI menu/Pattern menu to 
accomplish this i would be so much obliged.

Now I dont understand the point in having Channels A and B at all 
because it seems upon examining the pattern menu that you can have 

                32 channels but only 16 tracks

is this true???? please please someone help me figure this out.
So why have channels A and B? If you want to have two channels on the 
same track? Aaron you seem like you might have the answers but when i 
ask a difficult question you tend to ignore it. 

1. MIDI in channels -- "this menu allows MIDI data recieved at the 
MIDI input port to control either the A or B channels. With this 
switch set to B you could play an external MIDI keyboard on channels 
1B-16B while channels 1A-16A remain dedicated to the internal 
sequencer"
.................um okay.... well then what would I use to play my 
presets on Channels 1A-16A, the pads on the front? I want my keyboard 
to control the sounds in my MP-7 on some tracks and the E5000 on 
other tracks but never both at the same time. Seems basic to me.

2. MIDI enable -- makes sense to me, turn it off when you dont want 
that channel to play the internal sounds of the MP-7. 

3. Pattern Edit Channel Assign -- hmm gets a little tricky here. You 
can assign each **TRACK** (of which there are 16 total) to a channel 
(of which ther are 32) furthermore this channel can be set to 
internal external or both. Seems like we got some redundant functions 
here. Would you ever have a channel disabled in the MIDI menu but set 
to internal in the Channel assign? 

So what is the point of having channels A and B at all? If there are 
only 16 tracks anyway why not just use 1A-16A and disable the MIDI 
(or set the Channel Assign to ext) on the tracks you want to control 
external devices. 

Another Issue is which channel the MP-7 is using to talk to my 
sampler, as you know the E5000 has 16 channels also so if I use the 
Pattern Edit Channel Assign to set track 16 to 1B external, then i 
select track 16 (with rechannelize input on because apparently its 
impossible to play on the B channels with out it) is the MP-7 taking 
the MIDI controller input and rechannelizing it to channel 1 on the B 
output? Somehow I dont think thats happening.

I know that this post is likely to be ignored because it is as 
confusing as i am confused, if anyone could help me to understand 
these issues i think it could be beneficial to the whole group 
because after all the XX-7 is advertised as a "command station" for 
controlling other devices also. 

thanks to any heroic soul who dares tackle these question.

                                        drew