On Wednesday, software company Rogue Amobea released version 3.1 of Airfoil, its utility for streaming audio to simultaneously stream audio to one or more AirPort Express units.

The new version, a 9.5 megabyte download, adds the following features and fixes:
-Now supports transmitting audio to the Apple TV!
-Now fully supports Airfoil Speakers for Windows.
-Fixed DVD playback broken by Mac OS X 10.5.2.
-Improved performance on low-end machines.
-Improved compatibility with Front Row.
-Updated Instant Hijack to version 2.0.2.
-Many other minor fixes and improvements.

Airfoil 3.1 retails for a US$25 shareware registration fee and requires Mac OS X 10.4 to run.

If anyone's tried the new version and has feedback about it, let us know over in the comments or forums.