When multi channel sound cards are used with directX instead of ASIO, the sound mode of the windows operating system must be adapted to your available channels to show them correctly in UltraMixer.
To switch it go to “control panel => sounds and audio => speaker settings => advanced” change to your appropriate settings:
sound card has:
2 stereo-channels (4xMono) => Quadraphonic-Speaker
3 stereo-channels (6xMono) => 5.1 Surround Sound-Speaker