Ok let me start off new, as i have been confusing some of you.ok here i go.
at home im able to add sources (GNUPG keys) thru terminal to yast (no probs).

1 = At work im not able to do any of those even though proxy was specified.
Now i will forget about smart and use Yast. how do where do yast takes its proxy ? from control center ? or in YAST-->network services-->Proxy ?

2 = If im able to get Yast working on proxy which source can provide me with nice multimedia applications ?