I recently bought an cd of some classical music that's supposed to be in dolby surround sound. The CD case says "High Performance" but doesn't say SACD anywhere... are these the same thing? I play cd's on my dvd player, but my dvd player doesn't support SACD. my dvd player won't play this cd. Is it b/c this is an SACD, or b/c I use an optical cable to connect the dvd to receiver... or something else? do I need to buy an SACD player... how much is one?