Hi !
I'm not an expert on this but maybe i can be of some help :
In case of the streaming problem you are reffering to : i don't think there is a way to output your music any way different than the main out (on the actual moment you are playing it) - but maybe a pro user can tell otherwise ? The ethernet (LINK) and USB on the back are not meant for that, i'm sure.
The auto play you can turn of by holding in the TIME MODE button , to the right of the screen A.cue will appear on your screen and songs won't autoplay anymore.
jumping beats question .. no idea ,
on beat delay effect .. i just use the tap button to get it into beat
Mhh settings depends on your own experience i guess.
Hope i solved a little bit for ya : )
Grtz