As an addendum to what Markus said, to see the docs for the split command type the command
Code:
man split
and I think you would find that it would be a bit easier for you if you use a command of the form:
Code:
split -b 680m filename filename
which will split the file"filename" into pieces of at most 680 megabytes (to fit on a CD) but will also name the pieces filenameaa, filenameab, filenameac etc. This way you will know where the pieces came from without having to rename the files.

[edit] You must of course make sure that there is enough room on your drive to hold the additional split files. e.g. splitting a 1.3GB file requires at least 1.3GB free space.

Best Wishes
Pete

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