O.K., I kinda have the hang of mixing (at leat I understand the principles of it) and I get pretty decent mixes. But now I need to learn how do mastering, but other than making my CDs louder and having that punch that commercial CDs have, I'm not even sure what I should be really be looking for, what I should be useing, the whole thing. Is there any online tutorials I should check out? Please keep in mind I'm not an engineer, I'm a musician (well not really, I make electronic music ) Anyway, I'm using a Power Mac G4 with ProTools Digi001. I'm told that I don't need addtional software, what do you guys think? Any advice would be appeciated.