Main Menu - Control Panel - Instrument Sounds or shift+F10
You may select the MIDI Musical Instrument Device Interface - A system that allows electronic musical devices to communicate. Numbers describing pitch, volume, on or off, etc. can be sent between devices. instrument sounds that will be used for the drills. First, make sure that Send MIDI Instrument Patch Changes at the top is checked. Select a keyboard sound and a string instrument sound. MusicGoals lists the General Midi sounds for each instrument. These settings will be saved with the student file. If your sound device is not General MIDI, use the MIDI numbers on the left to match the MIDI numbers of your device.
see also: Sound and Midi, Midi and Sound Setup