Todd Michael Volpe, 48, was sentenced in federal court in Manhattan by U.S. District Judge Michael Mukasey after pleading guilty last November to defrauding actor Jack Nicholson, singer Paul Stanley of the group Kiss, and producers Kathleen Kennedy and Frank Marshall, among other well-known clients.

At the brief sentencing, he apologized for his actions and told the judge he had learned from his mistakes.

Volpe pleaded guilty to five counts of a 38-count mail and wire fraud indictment, admitting he used proceeds from selling or loaning his clients' artworks to support an extravagant lifestyle before he filed for bankruptcy in May 1995, the U.S. Attorney's Office said.

Volpe, who was partner in the Jordan-Volpe Gallery in New York, sold clients' artwork for his personal benefit, sold stolen artworks, and got auction houses, including Christie's, to advance him money using clients' art as collateral, the prosecutor's office said.

Volpe pleaded guilty to one scheme in which he persuaded Nicholson to provide money for an art investment fund, then sold art belonging to the fund and spent the proceeds, losing $224,000 of Nicholson's investment.

Artworks fraudulently handled by Volpe included paintings by Salvador Dali and Andrew Wyeth, as well as sculpture, vases, Tiffany lamps and pottery, the U.S. Attorney's Office said.