Able to custom:

* Judgements (128 x 128)
  Note_Cool.png
  Note_Good.png
  Note_Bad.png
  Note_Miss.png

* Note_Combo_*.png (64 x 64)
  Combo text. 5 pictures.

* Note_ComboNum_*.png (128 x 128)
  Combo numbers. 0 to 9.

* Note_Click_*.png (256 x 256)
  Click effect. less than 21 pictures.

* Playing_BG.png (1024 by 1024)
  Stage background. Used only 800 x 600 from upper-left.
