Hi everyone. I have a pair of great KRK Rokit 5 monitor speakers that I would like to use for: 1) either Garageband, Logic Express or Allegro... 2) iTunes music ... 3) any other sound that the computer makes so long as the speakers are connected. I'm looking to set this up with a MacBook (non-pro). Could anyone suggest a good and cost-effective way of doing this? What kind of thing would I need to connect the two 1/4" cables from the monitors? Thanks so much.