Go to OPTIONS | PREFERENCES and select the AUDIO tab
Under AUDIO DEVICE, select ASIO AARDVARK CARDS DRIVER

In versions earlier than 4, follow the same steps up until the final, where you’ll need to select WINDOWS CLASSIC WAVE DRIVER instead of ASIO.

SONIC FOUNDRY SOUND FORGE (PC only)

Go to OPTIONS | PREFERENCES and select the WAVE tab. Use the Dropdown Menus to choose which Q10 inputs and outputs you wish to use.