I got the error: "DVD Audio Extractor is damaged and can't be opened. You should move it to the Trash." What can I do?

This is because of a new security feature called Gatekeeper added lately in OSX. It by default restricts apps from running if they haven’t been downloaded from the Mac App Store.

To get around, just open Terminal and run command `xattr -cr /Applications/dvdae.app`. After that, you can run the app normally.