began map implementing

core/src/zero1hd/polyjet/audio/AudioData.java

@@ -49,8 +49,14 @@ public interface AudioData extends Disposable {
 	public AudioFormat getFormat();
 	
 	/**
-	 * Returns object containing basic audio data;
+	 * returns sample count
 	 * @return
 	 */
 	public int getSampleCount();
+	
+	/**
+	 * returns duration of song in seconds
+	 * @return
+	 */
+	public float getDuration();
 }