Sound Device Preferences
Choose settings for your sound devices.

You can choose from Wave or ASIO or WaveRT mode. This choice changes the rest of the controls available on this page.  The ASIO option will be unavailable if no ASIO drivers are found on your computer.  (WaveRT mode is only available on Vista.)

Use High Priority Threads For Audio Engine
This will cause all audio mixing sound engine threads to mix at a high system priority.  By default, Mixcraft will mix at high priority. 

Default Settings
This button will reset your driver and settings to the default.  This will change your settings to the Wave driver at 44,100 Hz, stereo, 16 bits ( 8 buffers @ 16384 bytes).