I just got my new Powerbook and I'm about to get an iPod. I'm new to the iTunes Music Store and just had some basic user questions: 1. When you buy a song, how many times can you burn it? What happens if you burn it too much? Don't you own the song after buying it? 2. Does it make sense to download songs at a higher quality than 128 kbps? If I listen to my music on my PB, on my iPod, or on a stereo through a burned CD, will there be a clear difference between 128 kbps and something like a 320 kbps song? Does it make sense to download songs at a higher quality?