I saw this video earlier and started with the concept of using MIDI. I would open a MIDI file, look at the notes, and send notes to Windows media player (MIDI module) while turning on/off channels in a DIO card. After some research it seems that very little work has been done in LabVIEW with MIDI and the interface to Windows Media player is not very supportive to MIDI interface. I will continue working on opening and parsing a MIDI file in LabVIEW. My only thought at the moment is to send MIDI commands to an external instrument.
If anybody else has ideas it would be great to hear them as the first thing people at work asked when they saw the video was "Hey can you do that in LabVIEW?"