update for multiple instruments, use drum + piano

AudioTest.html

@@ -19,11 +19,11 @@ var loader;
 window.onload = function () {
 	loader = new widgets.Loader;
 	MIDI.loadPlugin({
-		instruments: [ "acoustic_grand_piano", "acoustic_guitar_nylon" ], // or multiple instruments
+		instruments: [ "acoustic_grand_piano", "synth_drum" ], // or multiple instruments
 		callback: function() {
 			loader.stop();
 			MIDI.programChange(0, 0);
-			MIDI.programChange(1, 24);
+			MIDI.programChange(1, 118);
 			for (var n = 0; n < 100; n ++) {
 				var delay = n / 4; // play one note every quarter second
 				var note = MIDI.pianoKeyOffset + n; // the MIDI note

WhitneyMusicBox.html

@@ -66,7 +66,7 @@ RefreshFrame = function () {
 		var len = circleRadius * (1 + 1.0 / nbrPoints - r);
 		if (Math.floor(a / PI2) !== Math.floor(tines[i] / PI2)) {
 			MIDI.noteOn(0, i + 21, 100, 0);
-			MIDI.noteOn(24, i + 21 + 36, 100, 0);
+			MIDI.noteOn(1, i + 21 + 36, 100, 0);
 			lastSound[i] = ms;
 		}
 		var x = (cx + Math.cos(a) * len);
@@ -86,7 +86,7 @@ RefreshFrame = function () {
 
 window.onload = function () {
 	MIDI.loadPlugin({
-		instruments: [ "acoustic_grand_piano", "acoustic_guitar_nylon" ], // or multiple instruments
+		instrument: "acoustic_grand_piano", // or multiple instruments
 		callback: function() {
 			loader.stop();	
 			var canvas = document.getElementById('mycanvas');