audio out

hello, i have a couple of problems

i visit websites like JamKazaam, onlinejamsessions and others to virtual play with other musicians.

my first problem

is that only audio # 1 from the motu will play into the web sites and no other channel inputs, so therefore, i also cannot play multiple instruments at the sometime.

problem #2

when i try to play am audio file into these sites that also will not boradcast

thank you for any help

mac pro 2014 - 10.10.3

motu ultra mk3 non-hybrid

korg kronos

logic pro x

abelton live 9

abelton push

korg kronos