I would like to get some better sound when listening to iTunes and internet radio. Do I need to use an AirPort Express in order to connect my amp to my Mac Pro, or could I connect the amp directly to the Mac Pro? (not really sure how to do this or if it is possible.) Eventually I will probably go ahead and purchase the AirPort Express in order to have the ability to listen to music in different rooms. If I did that would I be able to listen to different things in different rooms? That would be the ideal setup. Right now however I just need it in my studio since one of my computer speakers crapped out. Sorry if this questions sounds very uninformed. There seem to be many audio inputs/outputs on the back of the Pro, but I just don't know much about audio. Thanks for any help.