play back offset
 

What is play back offset, and what does it do ?

If your graphics (singer display) isn't syncronizing with the song then you can adjust this to make it come out right.

Dale is correct.

Today, this is mostly a problem of the past. If your graphics card firmware is outdated, updating it will prevent the graphics being out of sync with the lyrics (or visa versa). If you notice every song out of sync the same amount, this adjustment can be used to correct your system... or update the firmware. :w