I'm not sure why you haven't at least tried my suggestion (above, from my post of five years ago), but never mind.
If your iPod is repeating the same song that would suggest that you have the Repeat function turned on. If it's repeating just one song, then you have Repeat 1 turned on.
Different iPods (and the iPhone) display the Repeat and Shuffle icons in different ways, but basically the Repeat icon looks similar to the two shown here:
and when off the icon usually has a white background. When it's on, the background may be blue or red (depending on your device). If the Repeat 1 is on, the Repeat icon will look like the one shown here:
The Shuffle button loks like this one:
and again, when it's on the background may be either blue or red. It's usually white when off.
So make sure the Repeat function is off.