This project is cancelled until I feel like messing with the Windows MIDI API again.
The concept of this program is to emulate a PS/2 keyboard on BGB, then allow the user to use their MIDI keyboard with LSDj.
On a related note, check out RetroPlug by tommitytom. It's pretty cool.
I will post a download link when it's done.
It's just a standalone executable, so no installer needed.