Well, I was just about to head to bed, listening to some music.
The 6 songs I listened to, worked just fine.
I don't feel tired, I walk around for a bit, and set it back to the first song.
Suddenly, on the 3rd song, which is 4:06 in length, makes a sudden surprise.
At 2:16, guitar noises come out from nowhere, and it's suddenly a different song.
The title was still displaying the title of the original 3rd song.
I plug it into the computer, and listen to the same song, same thing happened, at 2:16, it played a different song.
I had another copy of the song somewhere on my computer, listen to it, it runs perfectly fine.
So, it seems while I was listening to music, even after listening to that song without no errors, the MP3 suddenly stuffed the end of one song into the middle of another.