This program came without any doc-file. To use it you can: - Copy it to a directory (or disk) that contain .MOD file, then launch from there. - If you have a TOS>=1.4 and enough memory you can open 2 windows: - one containing CDPLAYER.PRG - one containing your mods Then activate the second window (left click on the window) Now, maintain the right mouse button while performing a double-click with the left button on CDPLAYER's ICON.