Don't stop music when new music if previous is the same.

Author: bladecoder

blade-engine/src/com/bladecoder/engine/model/MusicManager.java

@@ -89,6 +89,12 @@ public void stopMusic() {
 	}
 
 	public void setMusic(MusicDesc d) {
+		if (desc != null && d != null && d.getFilename() != null && d.getFilename().equals(desc.getFilename())) {
+
+			EngineLogger.debug(">>>NOT SETTING MUSIC: This music file is already playing.");
+			return;
+		}
+
 		EngineLogger.debug(">>>SETTING MUSIC.");
 		stopMusic();
 		volumeTween = null;