Jam session issues, I cant hear other players voice or instruments

[geddy1001]

Hi folks

So here is my situation:

I was jamming with 2 other folks
They could could hear each other both guitar and chat
They could hear me both guitar and chat
I could not hear them, eitherthe  guitar nor chat

I am currently using a Komplete Audio 2 and a PC , set to Input one for my guitar and the output set as "Chat microphone" through the little microphone built into my headphones. 

I was hoping anyone had any ideas/suggestions. Thanks!

Derek