ASIO UR242

Hi,
I own a Steinberg UR242 Audio Interface.
Mumble doesn't recognize this interface in ASIO mode.
Is there a way to make it possible to use professional ASIO devices in Mumble.
Every other ASIO-enabled application recognizes the interface just fine scince Steinberg interfaces are more or less an industry standard.

I tried it with the dev-snapshot and with the stable version of mumble