Hey
Well I'm sorry....
You can't. An input accepts a signal and an output gives a signal... You can't change that.
You have one set of outputs (jack) and 2 headphones outputs...
I don't know if you can route them different signals but....
You have an other on spdif and probably this can be used as output but you need a conversion device for it to make it analog....
I guess their is no other way to create more analog outputs
Sorry..