There was also a small adapter thingy with the holes for the green, black, and orange plugs on one side, and red and white holes for plugs on the other side... there might be a USB attachment that has those red and white cables? which can then be plugged into that attachment?
Just had a look on TradeMe.... would something like this be of any benefit? (plug into computer, plug red and white cables into red and white plugs into adapter, plug orange, black, and green plugs into other side of adapter.
http://www.trademe.co.nz/Computers/Cables/Audio/auction-149690088.htm