Jennifer Lopez with 2010 "American Idol" judges Steven Tyler (l) and Randy Jackson

*Jennifer Lopez’s ex-husband Ojani Noa had planned to audition for “American Idol” in Los Angeles in front of a judging panel featuring his former wife – but, as expected, it ain’t gonna happen.

A source close to Noa told RadarOnline.com that he was banned from trying out with all the other hopefuls at The Forum in Inglewood.

“Jennifer got Fox to make sure that the screeners at the auditions would not let Ojani anywhere near the auditions,” the source said. “Fox made it clear that he was not welcome and that he could be arrested if he showed up so he backed-out at the last minute.

“It was a shame because all he wanted to do was to showcase his voice and show people that he can really sing too.”

The source also claimed, “whenever Ojani tries to do something Jennifer just tries to block it any way that she can – nobody really knows what she’s so paranoid about.”

Lopez was married to the former Cuban waiter from 1997 to 1998. They have been embroiled in bitter court battles ever since. Most recently, the singer-actress has been trying to block him from releasing a film about his life because it reportedly contains raunchy footage of them together.

On December 1, 2009, Judge James Chalfant granted a temporary injunction against Noa and his agent, Ed Meyer, barring them from distributing the footage in any form.

Both sides are due at the California Court Of Appeal Second District on March 22, 2011, where he will continue to fight to be allowed to make the film about his life.