Alesis Andromeda A6

I am very very greatful to the person who had the very good idea to 
put the instrument definition file available on this site = it will 
save me a lot of time, since I intend to use it with Cakewalk too.
I'm new here, I bought my Andromeda 2 weeks ago ( good piece , uh !, 
a bit expensive though ...)
since I'm french, perhaps someone would know where to get a french 
user manual? (the file ...)
not that I don't understand english, but perhaps some paragraphs 
would be clearer...
another query = I try to use my A6 with a Roland Groove box MC 505,
when I play a mix (on my  MC 505 ) to my A6 (in program mode), I hear 
on my A6 only the notes played by the groove box on one channel :  
but  the 7 MIDI channels of my groove box are playing, and I hear 
only (for example) channel 7 if I have set the KBD MIDI channel on my 
A6 on 7 ...
Up until there, it's logical = my A6 is set up to receive channel 7, 
it's normal to hear the notes played on the same channel 7 by my 
groove box ; but how the hell do I do to hear ALL the channels played 
by my mc 505 on  one particular program (always in program mode )

Last = is a memory card really useful ? how much doest it cost ? (in 
the USA or elsewhere ...)
Thanks to all and long life to this site!
Gilles