It is C++Builder (unfortunately).
How much of the sound editor is VC++ specific? Just the GUI, or more? If the audio is WinAPI or DirectX, it should be easy to port.
I can wait until you've got the new version done before trying to merge it.
On another note, it would be incredibly easy to modify SCI Studio 2.1 to be SCI Studio VGA. Unfortuneately, due to the discoveries of Borland's memory leaks which I have no control over, I will probably be building SCI Studio VGA with a toolkit such as wxWindows and toss C++Builder. It will be a lot more flexible!
Do you have experience with these toolkits such as wxWindows, QT, GTK+, etc? If so, which is your favorite? I'm looking for one with the best speed, most compact, and (preferebly) portable. Compiling an empty C++Builder application with just a window is 450KB statically linked!