Hi bmog. It's as bapu said in the other thread. Download and install the uvi player. Download and install the ravens croft. Remember to activate the ravenscroft license to I lok.
Open uvi player in sonar. Open ravens croft from the UVI gui. If you have installed rcroft to a strange folder you will need to fiddle the uni prefs so it can see it. Good luck, it's a really nice virtual piano to play :)