Forgive me for being dumb, but what exactly is ASIO? I'm just getting into high quality audio, with a new audigy 2 and a klipsch speaker system. I've seen various references to ASIO and I can't figure out if it is to do with digital output or what. I'm quite curious, especially in reference to the ASIO plugin for winamp mentioned in several reviews. I'm sure you guys can clear this up for me.