The chord builder requires that you have a functioning MIDI driver selected (ie one separate from the DXi/VST driver).
If you click on the piano on the main screen, you should hear a sound if the driver is working.

If you can't get a MIDI driver to work, the only solution would be to switch to ASIO, and make sure ASIO always on is always selected.


Have Fun!
Peter Gannon
PG Music Inc.