Even if you are not a hardcore audiophile, but you value sound quality, I would pass the ZS over. Get an X-fi. The extra price is worth it. It does not resample sound, it supports ASIO, it supports bit-matched playback, and it is the best you can currently get for gaming.
And since it does not resample the sound, if you ever did get serious about sound quality, you could hook up an external DAC.
It's not made to speed things up. It's made so you can enable things like EAX without SLOWING things down.
so, umm, err yeah