Those extra songs are probably just the standard "unreleased" Early Floyd songs from bootlegs (Scream Thy Last Scream, Vegetable Man etc) tacked on by the mp3-maker. In that case, look the lyrics to the songs up at www.pinkfloydhyperbase.dk and be thankful you found them all so easily.

Failing that, some enterprising bullshit-artist has put some completely unrelated stuff on the end of the mp3 in order to confuse you.

__________________
what do you teach your children about me?
what do you teach your little children about me?
pimp, thug, bling drug lord of the undergrounded kings
how can you be so sure i won't call down the rain?
what do you teach your little children about me?
you point your gun, wait, hide and run. i see it plain