Uh, no, I don't think so. It has what I would consider to be a regular audio socket on one side. I plug either headphones (regular ipod headphones, not ones with a big plug) or my current (defunct) speakers into this plug. The speakers I have right now, the wire goes to one of the speakers and from there this speaker connects to the subwoofer and the second little speaker.
So, I think not. I have had a look and this is the only socket for speakers (there is one next to it for a microphone, but I am guessing that is not much good).
Would I need more than one socket for 5.1 speakers?
ARe the ones at the moment 2.1 speakers?