Hello. I am new to this forum. I am building an audio setup at my home to mess with digital audio and to play music. I selected a MBP with 4gig ram running iTunes and Live7 Suite. I have the Axiom 25 midi controller connected via usb. I have been messing about with this setup for a few months now. I have the Harmon Kardon computer speakers and sub that came with a Dell a few years ago. The sound could be much better. So what do I need? I am looking at an audio interface, perhaps the duet. Expensive though. And, do I need an additional amp? What speakers do you recommend? My goal is to be able to play what I create, play other music, or to mess around on the Axiom using Live. Please recommend... Thanks.