[new features in Ver5.1]
* Support for tape recorder
 Added support of connection between a keyboard and a tape recorder.
 See teperec.txt for description.
* Support for DiskSystem mechanical sound
 Now you can emulate the sound of access to a DiskSystem disk with a WAV file.
 The WAV file is distributed on the official site
* Support for movie
 By recording key input of player you can see it as a movie after game-play.
* Rich icon display
 In window mode icons change as a cart or a disk
 (New icon by Kasion)
