I would suggest a 2-step process. The first is to get a program designed to copy as much of a corrupted file as possible. There are many of these, but I have used
this one.
Once you have the file on your PC, use the wvunpack command-line program with the options -b and -w. This will force wvunpack to blindly decode every valid WavPack block it finds and create a .wav file. You may miss a little bit where your file corruption was, but you should get most of it.
Hope this helps (I know I'm a little late)...
