Troubleshooting: Error message says that the "app is damaged."
If you get an error alert stating that the "app is damaged and can't be opened," here are some solutions:
If you're on OS X Mavericks (10.9) or OS X Yosemite (10.10), check that your computer's security settings are set to allow apps downloaded from anywhere and not just from the Mac App Store. Go to your System Preferences > Security & Privacy. Under the General tab, choose to "Allow apps downloaded from: Anywhere". Now try launching Sound Studio again. You should get an alert that gives you an option to open the app.
If you downloaded Sound Studio from the Mac App Store, try deleting and reinstalling the app. The download could have been corrupted.