Hi everyone, Got my first Macbook in May 2007, and so far problems have been very few. I'm running OS X version 10.4.11 But a recent glitch has popped up as I use itunes 7.5. I've been ripping my CDs into 128 kbps AAC files, and hadn't had problems. But now suddenly, the last five CDs I've ripped no longer result in 128 kbps, but in somewhat random bit rates ranging from as low as 92 to as high as 131, and I get a lot of 125 and 127 files. I find this annoying as I'm trying to create a uniform library. Everything seems to be set right to me in menu: itunes- Preferences - Advanced - importing. AAC encoder set to 128. I have not set it to custom or variable bit rate. Note the music CDs are from: 1990, 1992, 1995, 2000, and 2007. Please help me fix this and get 128 files.