Can you connect your 5.1 speakers with a wire type connector to a laptop without a player?
I don't think you can. Your player has specific ports which
allow your 5.1 set to connect to it. Sadly, a laptop doesn't have
ports for this type of connection.
However, if you can get hold of an AUX cable, you will be able
to connect your laptop directly to your player, and play songs off
your laptop directly through you home cinema.