You can use the cover instead of the record itself by punching a hole in the middle and following all the steps below :)
To make your new and improved 'rock-clock' pull off the hands and detatch the thing that holds the battery.
Stick the clock mechanism through the record hole (if it dosnt fit twist a scissor blade in it) Glue it down with a few drops of strong glue
Now push the hands on the frount and your done. Put a battery in and your ready to rock :)