You can use Disk Utility to burn multisession CD-Rs without having Roxio Toast. The method for doing this is not quite as slick as using Toast, but it works. First, use Disk Utility to create a disk image of the folder you want to burn. Next, click the burn icon in the Disk Utility toolbar, then select the image you want to burn, and click burn again. A burn disk dialog box will pop up. Click the little blue triangle on the right side of the box to get more options. Click the "Leave disc appendable" option. Then, click burn to burn the disk. When you're ready to burn more stuff to the disk, repeat the procedure. You'll notice that on the last step, the "burn" button will have changed to "append" which indicates that you are about to add more data to a disk that already contains previously recorded data. When you insert a disk burned using this method, you'll see one disc icon for each session on the disk appear on your desktop.