That means it always sounds perfect – exactly the same as the original.  Even though the sound is perfect, it still saves a lot of space. (think of it as a beefed-up Winzip¢â for your music) The other great thing is that you can always decompress your Monkey's Audio files back to the exact, original files.  That way, you'll never have to recopy your CD collection to switch formats, and you'll always be able to recreate the original music CD if something ever happens to yours.