okay, i've decided to re-rip all the cd's that i own at highest quality mp3 possible. I've already decided to use 320kb but what is the difference between CBR and VBR. And if u look into the custom options of importing music in itunes you will see settings for sample rate, channels, and stereo mode. The default is set to auto. What should i do? Should i use the default, and what is VBR, is it better?