ASIO Preferences
These are the preference options if ASIO mode is selected on the Sound Device Preferences.  ASIO is an alternative driver system that allows for lower latency and better synchronization between playback and recording.

Tip: Always make sure that you have the latest drivers for your sound device or sound card.  Visit your sound device or sound card manufacturer's website.

Default Input (Recording)
Choose the default sound input to record audio from.  Please note that on Vista, you may need to make sure the device is on and plugged in, otherwise it may not show up.

Default Output (Playback)
Choose the sound output to play audio from.  Please note that on Vista, you need to make sure the device is on and plugged in to speakers, otherwise it may not show up.

ASIO Device
Choose the default ASIO Device to record from.  ASIO only allows for one device at a time.

Open Mixer...
This button opens the ASIO mixer for the ASIO Device and allows you to choose the latency settings and other more advanced settings.  (The ASIO mixer is made by a 3rd party and will look different depending on what type of sound device you have.)