Hi, I've been using a PC with Cubase 4, for years. Not only have decided to renew my equipment...but also decided to do a complete 180, and purchased a Macbook Pro 17", 750g, 7200rpm. I also purchased Logic Studio Pro, so good luck to me because I'll have a lot of learning to do. Seeing as I needed to change my audio card to an M-Audio card on my PC, will I have to get another audio card for my MacPro? As for the audio output, how do I connect to my amp? I will receive my equipment this week, and am eager to plunge into the Mac world. I've been a PC for 25 years, and been wanting to do the switch to Mac for a long time. I'm 74 and finally decided to do it now. Better late than never...I guess! Thank you Retired producer and musician.