this thread also seems to concern the same issue of songs not playing at the right speed with the motor on as here:
and here:
It is one of two issues i found on my players which i discussed here:
As of yet no one seems to have solved this except for Harrisonm65 by changing out the motors. For me this is expecially frustrating since the devices i have are practically new. Has anyone here an idea how to track down the issue or fix it without changing any parts?