The Donald is keeping the party going at Mar-a-Lago since his arrest and indictment in Manhattan this week.

Spies said that Donald Trump has been playing DJ at his private Palm Beach, Fla., club, which is back in party mode following a “somber” scene before his arrest.

A Trumpworld insider told us that the former president was DJing at the club Wednesday and hit the decks again Thursday.

“He was back on his iPad last night for his regular DJ gig,” an insider told us on Friday. “Trump told members he is ‘back on track’ and that he will be found not guilty.”

After his arraignment in New York Tuesday, Trump returned to Mar-a-Lago and delivered a rant against his arrest to supporters that night, saying the real “criminal” is Manhattan District Attorney Alvin Bragg.

Trump said of his indictment, “The only crime that I’ve committed is to fearlessly defend our nation from those who seek to destroy it.”

But by Thursday, he was “telling people that he is resuming his normal life and schedule — including playing his weekly [DJ] session,” said a source.

The source added that “he loves playing ringmaster — he played music from his seat [on Thursday] while he ate ice cream. Things are more upbeat at the club — members were surprised at how happy he was.”

Sources previously told Page Six that “Trump is officially DJing every Thursday night” at the members-only club.

The source added, “Members know this, and when they invite guests they say, ‘Let’s have dinner on Thursday, because Trump DJs every Thursday,’ as an event . . . Of course he works the room for votes.”

The real estate magnate has been known to play Broadway tunes and ’80s hits from his iPad, including “Phantom of the Opera,” along with, “Céline Dion, ‘Titanic.’ ‘YMCA’ is another favorite,” we’re told.