just use the send return loop on the 800's effector and route your audio through a channel in ableton. if you wanna load up a bunch of effects on that channel, instead of dropping a million vst's and effects and whatnot also use dummy clips and live's send/returns as they will make the possibilities even more endless and take some weight off your cpu as well....

also what i've done to keep my CDJ's involved is i developed a hybrid set where I mix into ableton when convenient to do live re-edits and remixes, use sampler, impulse, etc and then mix back onto CDJ's when im done.

i wish i understood what you were sayin... i have your sn now so we can talk about this further...