Yamaha mLAN16E Software Manual page 18

If the computer's system sound is output to mLAN audio channels:
The computer's system sound (such as an alarm sound) will be output to mLAN audio channels if
the following settings are made:
• The WDM driver is selected in mLAN Auto Connector or mLAN Graphic Patchbay.
• mLAN WDM driver (mLAN Audio Out/In 01) has been selected for the Windows system audio
device.
Follow the steps below to prevent the system sound from being output to mLAN audio channels.
• The following setting cancels output of all Wave sounds from the computer speakers.
1
Select [Start] ➝ [Control Panel] ➝ [Sounds and Audio Devices] ➝ [Voice], and click [Volume...] in
the "Voice playback" section to call up the Master Volume window.
2
Check the Mute checkbox in the Wave column.
TOOLS for i88X/mLAN16E, Plug-in Effect
18
Installation Guide