I'm running the Sound Blaster Live! 5.1 sound card. I plan on upgrading to the Audigy ZS. I have Creative 5.1 speakers and a pair of Sennheiser HD-280's. I was wonder how I could easily switch between the two while I'm useing my computer? Can I have the Speakers and Headphones hooked up at the same time and just change the ouput of my sound? Any suggestionss?