kitekrazy
Get something like a Focusrite Scarlett.
I just got my first Focusrite based on things the folks have said in the forums, and it is beyond amazing. Even though it is set to ASIO and exclusive (both in Win7 and X3), anything I open connects to it in "ASIO" mode at the same time! X3, Melodyne, Geist, Audition... all open at the same time and playing through the Saffire without any issues.
First time I saw it was with Melodyne and I attributed it to ARA integration, but I am assuming that it is truly "the best damn WDM wrapper" on the planet.
I found that feature by accident, but have been nothing less than thrilled about it.
Edit: The Focusrite ASIO driver actually uses "ASIO Aggregation," meaning that it can accept multiple inputs via ASIO and process them all... someone dropped the proper term and tech spec on me in another thread, so I wanted to update that here.