[NCLUG] CD-R recovery tool?

[Walter Lamia]

I've got this CD-R that was created under Win, and it seems to be a UDF
stucture, but it is damaged somehow.  There are a couple of Win recovery
tools that are able to reconstruct some of the directory structure, but they
want $40-50 each, but the contents aren't worth that much to me.  Does
anyone know of any free Linux (I have Mandrake dual-booted on the system) CD
recovery tools that might be able to extract the files?