A disk player has a magazine for storing disks and a disk transport mechanism transporting a selected disk between a playback position outside the magazine and a store position located entirely within the magazine. The carriages are stacked upon each other and pivotally supported within the magazine. The carriages are extracted from the stack by lifting a front end of a carriage above a selected carriage. Subsequent to the lifting of the carriage, the selected carriage is withdrawn from the magazine to the playback position. When a selected carriage is moved to the playback position, the disks on carriages above and below the selected carriage are prevented from shifting with the removal of the selected carriage by coaxial opposing shafts which extend through spindle holes in the disks on the carriages above and below the selected disk. A closeable gap between the two shafts permits the selected disk to be shifted. The gap is closed, except when a carriage is being shifted into or out of the magazine, thereby preventing disks and their carriages from shifting due to vibration or tilting of the cabinet.