U-MIX44 SOUND PROBLEMS

Hi!
is it possible tou use the U-MIX44 as output on your computer?
what i mean is, i only can use my headphone by inserting it in computer , not the E.S. (i can use it when i use DJ - software)
but what i'm trying to ask is:
is it possible to use the E.S. aswell for my computer and djing?
(so the sounds of a video will come through the E.S. and not the PC, if you know what i mean)
if you have any more questions about my question, feel free to ask.
(P.S: i'm not really good in english so please don't go hard on me
)
Kind regards ,
Jamie
is it possible tou use the U-MIX44 as output on your computer?
what i mean is, i only can use my headphone by inserting it in computer , not the E.S. (i can use it when i use DJ - software)
but what i'm trying to ask is:
is it possible to use the E.S. aswell for my computer and djing?
(so the sounds of a video will come through the E.S. and not the PC, if you know what i mean)
if you have any more questions about my question, feel free to ask.
(P.S: i'm not really good in english so please don't go hard on me

Kind regards ,
Jamie