just came across this...
http://www.ikmultimedia.com/products/irigua/

amplitube for android...
real time effects processor on phone and an irig interface ...

this kind of interface would be handy...
mind...
with what we have...
utilizing a few usb sound cards on the n8x0 is not much of an option since it won't recog. it...
of course I'm most very likely missing something...

if getting the headphone port on the n900 to in and out...
(yet to find a good female mic/ headphone to male 4post adapter that will work ...yet again perhaps I'm doing something wrong...or omitting something...) properly were to work ...
hooray...

otherwise...
it is using a chunk of silicone a nokia bluetooth earpiece mic/ for phone and funneling it through gtkgep ( possibly) and then out through headphone port...
or
out through bluetooth to speakers or a pc..
or
in... via onboard mic..(use it now..but not as good as virtually any other potentially workable method)
and then out through bluetooth to pc / speakers / headpphones..
or just out to headphones
(Thinking about it...I must be not configuring something properly...)
sigh.
could be worse s'pose....