It is a packt file extract it to a floppy disk and Then just follow the instruction.
INSTALLING THE UTILITY AND DRIVER FOR THE 4 DISC CD-ROM CHANGER
Copyright 1996 NEC Technologies, Inc.
Copyright 1995-96 Triones Technologies, Inc.
March 1, 1996
1. Insert the floppy disk into drive A .
2. Open "My Computer", double click "drive A".
3. Double click setup.
4. Then just follow the instruction.
If the INSTALLATION fails go to setup ini and edit the line
DefaultDir = "C \Program Files\CDROM Changer"
DefaultDir = "C \Program\CDROM Changer"
And try agin god luck..
This file can work on some more cd-player that have 4x4 system from nec