Hello everyone. I have just purchased a set of logitech x-530 speakers to go with my 2010 MBP. It was a bit of a rushed buy without much research and as such I have realised that the computer doesn't seem to have the appropriate soundcard to produce 5.1 sound (is this correct). At the moment I can only play 2 channel sound leaving the other 3 speakers hanging about. Do I need to buy a external sound card or is there an adaptor that will sort the problem for me? Any ideas?