you don't need to slice it.
I'm using unix/linux tool named `mkisofs' and I make a "plain vanilla" ISO image and then use DiskCopy.app to burn it.
I have burned, many, many data CDs with over 700M. I think last week I burned something like 704M CD...
The "disadvantage" of `mkisofs' I use, is that it's CLI tool [you need to use Terminal.app].
But it's very simple.
Make a folder with the file/files you want to burn [let's name it "myCD" in the Movies folder]. So, this is the command you need to use:
mkisofs -l -x .DS_* -V MYCD01 -o mycd.iso ~/Muvies/myCD
That's it, sit back, relax, and it's done.
["-l" allows "long" file names... but be careful with funny names, coz "["-s and stuff will be made into "_"]
[-x .DS_* will exclude files that start with ".DS_", you know those annoying hidden files]
[-V sets the Volume name]
If you have `fink' installed, it's easy to install `mkisofs'
PS. Hold on a sec, I'll check if there are any "Mac friendly" ports of this applicatio

so you don't have to worry about the Terminal.app
I can't find any, but here is a `mkisofs' binary [so you don't need to install `fink'
`mkisofs' at versiontracker.com
If you have questions how to use it, ask me, or the guys at the UNIX forum!
