Mostly because every oom in my house right down to the bathroom contains a pair of speakers hooked up to an Airport Express, the true killer app on the iPhone and iPod Touch is Apple’s official Remote app, which allows you to control and stream your iTunes library with painless ease.
I always assumed that the Remote App would work perfectly well on the iPad, but just in case it was in doubt, iTunes 9.1’s preference panel spills Remote on the iPad as a fact. Whether Remote will be a universal app, or get an HD overhaul is still unknown, but since I expect my iPad to pretty much live on my coffee table as an e-reader, casual browsing machine and photo album, I’m still pretty excited.