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diff --git a/tests/com/jsyn/examples/PlayNotes.java b/tests/com/jsyn/examples/PlayNotes.java
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+/*
+ * Copyright 2009 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.examples;
+
+import com.jsyn.JSyn;
+import com.jsyn.Synthesizer;
+import com.jsyn.unitgen.LineOut;
+import com.jsyn.unitgen.SawtoothOscillator;
+import com.jsyn.unitgen.UnitGenerator;
+import com.jsyn.unitgen.UnitVoice;
+import com.softsynth.shared.time.TimeStamp;
+
+/**
+ * Play notes using timestamped noteOn and noteOff methods of the UnitVoice.
+ * 
+ * @author Phil Burk (C) 2009 Mobileer Inc
+ */
+public class PlayNotes {
+    Synthesizer synth;
+    UnitGenerator ugen;
+    UnitVoice voice;
+    LineOut lineOut;
+
+    private void test() {
+        // Create a context for the synthesizer.
+        synth = JSyn.createSynthesizer();
+        // Set output latency to 123 msec because this is not an interactive app.
+        synth.getAudioDeviceManager().setSuggestedOutputLatency(0.123);
+
+        // Add a tone generator.
+        synth.add(ugen = new SawtoothOscillator());
+        // synth.add( ugen = new SineOscillator() );
+        // synth.add( ugen = new SubtractiveSynthVoice() );
+        voice = (UnitVoice) ugen;
+        // Add an output mixer.
+        synth.add(lineOut = new LineOut());
+
+        // Connect the oscillator to the left and right audio output.
+        voice.getOutput().connect(0, lineOut.input, 0);
+        voice.getOutput().connect(0, lineOut.input, 1);
+
+        // Start synthesizer using default stereo output at 44100 Hz.
+        synth.start();
+
+        // Get synthesizer time in seconds.
+        double timeNow = synth.getCurrentTime();
+
+        // Advance to a near future time so we have a clean start.
+        TimeStamp timeStamp = new TimeStamp(timeNow + 0.5);
+
+        // We only need to start the LineOut. It will pull data from the
+        // oscillator.
+        synth.startUnit(lineOut, timeStamp);
+
+        // Schedule a note on and off.
+        double freq = 200.0; // hertz
+        double duration = 1.4;
+        double onTime = 1.0;
+        voice.noteOn(freq, 0.5, timeStamp);
+        voice.noteOff(timeStamp.makeRelative(onTime));
+
+        // Schedule this to happen a bit later.
+        timeStamp = timeStamp.makeRelative(duration);
+        freq *= 1.5; // up a perfect fifth
+        voice.noteOn(freq, 0.5, timeStamp);
+        voice.noteOff(timeStamp.makeRelative(onTime));
+
+        timeStamp = timeStamp.makeRelative(duration);
+        freq *= 4.0 / 5.0; // down a major third
+        voice.noteOn(freq, 0.5, timeStamp);
+        voice.noteOff(timeStamp.makeRelative(onTime));
+
+        // Sleep while the song is being generated in the background thread.
+        try {
+            System.out.println("Sleep while synthesizing.");
+            synth.sleepUntil(timeStamp.getTime() + 2.0);
+            System.out.println("Woke up...");
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        // Stop everything.
+        synth.stop();
+    }
+
+    public static void main(String[] args) {
+        new PlayNotes().test();
+    }
+}