It looks like version 1.0 of the Tiësto App was launched on March 4th.  Where was I?  This App is awesome.  There is tons of music, videos, podcasts (including the second hour which is available weekly), and the ability to save the podcast to your device for playback later.  I tested that feature on my iPod touch in my car over the weekend while making trips to downtown Austin.  Everyone in traffic was jealous of me and my groovy Tiësto podcast which was being played back at a most reasonable volume.  🙂