MyJal wav files

I purchased a CD on ebay with thousands of ringtones, wallpapers... on it. I've successfully downloaded games and stuff but when I try to download the wav ringtones, it says the filename is too long. MyJal only allows 20 characters including the file extension. I've been unable to change the file names on the CD because it says it's "read only".
Anybody know how I can get these filenames to upload onto MyJal?
Thanks

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Drag and drop the files from the cd into a folder on your computer, then rename them.

Yep that should work.