Ah... the UK site is a little bit clearer than the German version. The X-Fi music is the card I've got and I can greatly recommend it. If you need PCI-E it'd take the new "Audio". I don't believe that this card cannot decode DD/DTS by hardware since they should have the same chip, but if you wanna be sure, why not simply ask creative.
But for that site... the technical specs are stupid. There are shops out there who offer more details.
But for that site... the technical specs are stupid. There are shops out there who offer more details.