CD AUTO-CHANGER

PROBLEM TO BE SOLVED: To execute the play in full of variety without using a large scaled RAM by playing the address track during the execution of the disk number decided by a random number and specifying a track at the time of playing this disk next to a specific address track. SOLUTION: A microcomputer 3 incorporated with a RAM and ROM is operated in accordance with a program written in the ROM and a signal from a head unit to control a disk exchanging device 2, a CD reproducing device 1 and a mute circuit 4. By the disk exchanging device 2, the disk specified by the microcomputer 3 in a magazine is taken out and mounted on the CD reproducing device 1. By the CD reproducing device 1, an optional track of the mounted disk is reproduced in accordance with the command of the microcomputer 3, then an audio signal is outputted to the mute circuit 4. By the mute circuit 4, the inputted audio signal is muted in accordance with the command of the microcomputer 3 or outputted to the head unit as it is.