SDCard directory changed

- Now Ultrasonic stores files and caches in
	sdcard/Android/data/org.moire.ultrasonic instead sdcard/utrasonic. The
	user stills can change the music directory.

ultrasonic/src/main/java/org/moire/ultrasonic/util/FileUtil.java

@@ -370,7 +370,7 @@ public class FileUtil
 
 	public static File getUltraSonicDirectory()
 	{
-		return new File(Environment.getExternalStorageDirectory(), "ultrasonic");
+		return new File(Environment.getExternalStorageDirectory(), "Android/data/org.moire.ultrasonic");
 	}
 
 	public static File getDefaultMusicDirectory()