Hmm I never noticed this before, but my AudioFire2 only supports a single ASIO output stream, even though the card behaves as if it where three soundcards in one.
This is what you mean by multi-client audio right?
It can be done using DS though, but that's not optimal, maybe ASIO4ALL + native AudioFire ASIO would do what you want?
My experience with Echo has been pretty good, their support line is quick and helpful, but they need to release a driver that doesn't require tinkering to work.
Edit: no that ASIO4ALL trick would output through a different output then the native ASIO stream...
Some DAW's can work as a plugin though, and that could solve the problem.
Edited by Adda - 4/1/11 at 4:56am