I am a Windows user who is considering this MAC primarily for Music. I know I can't upgrade this, so I need to be sure. I thought I heard someone say something about the lack of proper Firewire ports, so I have 2 questions: 1. Out of the box, is this iMAC G5 suitable for a maximun of 24 tracks of audio recording? 2. What is the difference between Firewire 400 and 800, and does this new MAC have both or only one. Thanks Chaz