Multiple-Session CD Burning
To answer your question about burning a CD with multiple sessions, I found this in the February '03 issue of Macworld on page 101, written by Ronald C.F. Antony, Providence, RI.
"New in OS x 10.2 is the ability to burn multiple-session CDs. Here's how to make use of this feature:
Launch the Disk Copy application (found in the Utilities folder inside the Applications folder) and select New from Disk Copy's File menu to create a new image (a blank image, an image that mirrors a device, or an image from a folder or volume). Once you've created the image, select Burn Image from the File menu. In the After Burning section of the resulting Burn Disc window, make sure the Allow Additional Burns option is selected. Click on the Burn button to burn the contents of the image to the CD.
Repeat this procedure to burn additional images to the disc. Each session will appear on the desktop as a seperate CD."