Arduino powered gramophone project help, noob

Sorry I should have been clearer about that earlier but basically its using a gramophone as an interface but its not going to function in the exact same manner. Its a gramophone and when a person selects an object from a selection and places it a pedestal the arduino will recognize the RFID tag inside and select a song that corresponds to the audio. Then the user will turn the hand crank which will affect the speed of the audio until its playing at a normal speed. The audio is being handled with Pure Data and Processing and I have this working already to a degree so I won't actually be damaging a record but I still want this working for the general look of the project. I also must handle the anti clockwise turning of the hand crank and this is my main problem at the moment it is working but I am unable to do anything with the values once it goes below the 0 mark to 65535.