Buy new cables. These cables are called FFC or FPC flex cable. The distance between the contacts ( called Pitch ) is 0.5mm. Cable length is origin 12 cm (10 cm or 15 cm fits also). More details:

Buttons power, led, : 13 Pin - Type A

Buttons play, + , - , connect : 6 Pin - Type B (reverse) (=the connectors are reversed to each other)

The (blue) inflexible cable-end have to be maximal 0.5 mm long (at least one side). Otherwise you must trim this part: Use tools like cutter & scissors ( see video below ) or alternative a mini rasp / file.