Rogue Amoeba, a leading indie Mac developer, has decided to enter the fast paced world of building Windows applications. Yes, folks, you read that correctly. Rogue Amoeba has ported Airfoil, a neat little application that allows you to stream audio other than iTunes to an Airport Express, to Windows.
I have no idea how many Windows users have Airport Expresses, but more power to Rogue Amoeba. At the moment the Windows app is in a public beta, but before long it'll cost ya $25.