Split a long audio mp3 file into smaller parts

I had a several hours long audiobook file and it was cumbersome to handle it with my mp3 player, because it had only rudimentary controls for moving in the file. So I wanted to split it into smaller parts and as it turned out it's quite easy. The file can simply cut into pieces, no complicated trickery is needed. I used Total Commander to split the file and it worked beautifully. Try it yourself.