SID Config:

  Use Rewind Buffers: If you  want to be able  to use  rewind when  you are
  playing SID modules, then check this ON.
  Warning: This uses  a lot of memory  (approximately 0.5 kb/sec), so don't
  use it if you can't live without the memory!

  Rewind Speed: This slider is used to decide how much the tune  should  be
  rewound  every time you push the  rewind button. (For advanced users: The
  amount is the number of frames that should be rewound).

  Forward Speed: This slider is used to decide how much the tune should  be
  forwarded  every time you push  the forward  button. (For advanced users:
  The amount is the number of frames that should be forwarded).

  I love copying text frames... :-)