As Mel Gibson and his former love Oksana Grigorieva prepare to go to family court Thursday in their custody showdown over their baby daughter Lucia, RadarOnline.com will shortly release yet another explosive audio recording in which the Braveheart star completely loses it.

In this latest taped tirade, we hear Gibson, screaming, snarling, and panting, as he calls Oksana every explicit and insulting name in the book.

We also hear the Oscar winning director/actor - who's made tens of millions of dollars in his Hollywood career - make a shocking claim about the state of his finances.

At another point in the call, Mel becomes completely unglued as the subject of his support for Oksana’s music career comes up.

Keep checking back with RadarOnline.com. We will post the new tape shortly.