Please leave a comment here if you’re into the whole backmasking thing. Have you tried it? What have you found? Do you think there is something to it, or do you just think it’s all a coincidence? This is the place to leave your comments on what you’ve discovered from your own experimenting.
If you don’t know where to start, Audacity is a great open-source, freeware audio editor for Windows, Macintosh, and Linux. Among its features is the ability to reverse audio files.