I have an apple power book g4 titatium with cubase installed. I also have a roland vs880. Would like to move files/tracks from roland to powerbook. Any ideas?

Check out VS/link from Airworks.
http://www.airworks.com/products/vslink.html

If you don't want to spend $300, do what I do, just record two tracks at a time (one panned far left, the other far right) into your computer. I use the iMic, but have to admit i get a lot of clicking sounds.