A multiple-disc player includes a player housing in which a disc holder housing discs held on respective plate-like trays is loaded. Desired discs are selected and transferred successively from the disc holder onto the disc carrying surface of a turntable by a disc pickup/transfer mechanism for continuous disc playback operation. A playback means including the turntable is supported on a support member through a vibration-resistant mechanism. The support member is movable between retracted and unretracted positions with respect to the trays as they are pushed out of the disc holder. When the support member is in the unretracted position, the playback means is fixed to the player housing by a lock mechanism for increased resistance to vibration.