Hi, first post here. I just bought a new iMac (and iPod) a week ago and so far I'm loving it. So far, there are 2 things I can't figure out. 1. when I connect my 4 GB memory card (jump drive, whatever you want to call it) to the Mac I can copy files onto it no problem. But when I delete those files from my memory card it still shows up as being full. Even though when I look at the memory card through the Finder nothing shows up. Yet when I click on "Get Info" it shows that it's at capacity. When I take this same memory card to my old computer (a PC that I'd dying to throw in the garbage) a two folders show up. After I format the memory card on my old PC, it's clear and I can load it up with songs again. How do you format a memory card on a Mac? 2. Garage Band. I play guitar and bought the cable to connect my guitar to the Mac. I want to be able to play freely without having to record all the time. I understand that I can select "Magic Garage Band" and then jam freely with the fake band but can I not create a new project, select the drum beat and bass line I want, then freely rock out? If so I can't figure it out. Thank you in advance.