For those of you with an AudioFire interface, after two years a new driver is available. Gotta love Echo's update cycle - don't fix what isn't broken - a driver update every two years is enough. Not to mention many companies won't even support their devices that long.
Overhauled streaming engine featuring better synchronization between playback and record isochronous FireWire transfers and lower FireWire playback bandwidth
Fixed potential blue screen caused by connecting and disconnecting multiple devices repeatedly
AudioFire2 and AudioFire4 Playback Routing
The AudioFire2 and AudioFire4 now support routing playback from the computer to different physical outputs.
Audio applications see the AudioFire’s outputs listed as "Playback 1" through "Playback 6". Using the console, you can then route the playback channels to either the analog outputs, headphones (AudioFire2 only), or digital outputs. Each playback pair can be independently routed to any of the outputs. You can also duplicate playback pairs so the same audio goes to more than one set of outputs.
To change the routing, open the AudioFire Console. Select the Settings tab; near the bottom of the window you will see the new routing control.