A cyclic redundancy check error happens when trying to extract files from a damaged archive.
If there are problems reading the CD for those 2 rar files, Windows Explorer will not be able to copy them, since it quits as soon as it encounters a problem. However, you should be able to copy them with the recovery function of CDCheck.
With the play CD in an optical drive, run CDCheck (if it isn't already started), then click on the + sign next to your optical drive letter, then the one by the 'disk3' folder. Select the sound.rar file, then click on the Recover toolbar button.
This will bring up the 'Recover setup' window, with the sound.rar file already filled in as the source file to recover. The next text box for the 'Output directory' will be blank. Click on the '...' button to the right of the text box, and then browse to a folder on your hard drive (ie 'c:\temp' or whatever) and click 'OK'.
The rest of the options you can just leave at the default settings. Click 'Continue' at the bottom right of the window, and the program will start copying the file to your hard drive.
When that is done, select the wizf.rar file and hit the Recover button. This time the output directory will be filled in already, so you can just hit 'continue' to copy this file to the same folder as the sound.rar file.
