I've listened to half of it so far. It's complete madness.
They make the claim that men are more affected by 'desire of the eyes' than women.
21.0 Flirting is discussed. A female can't tell a male that his hair or dress looks good along with enquiring as to his safety unless she is intending to marry him.
54.0 Makes some outrageous claims about tight clothing and that it looks homosexual because it makes the male look more feminine. It sexually arouses both men and women.
1.04 Is the pillow talk. A person may be guilty of masturbation by going to sleep with a pillow or blanket between their legs if it leads to a wet dream, you need to be honest with yourself when doing this if your intention is for this to happen. It's okay to have erotic dreams that lead to orgasim but you've got to examine whether you have thought of anything that has led to that, which would be wrong.
Wearing tight underwear and walking around in it, to the point of ejaculation is also masturbating yourself.
So far, not one scripture to support the claim that it is biblically wrong, that would be because there isn't one.