As you may know, President Obama has nominated Mr. Jimmie V. Reyna to fill the last remaining vacancy on the United States Court of Appeals for the Federal Circuit. [Press Release] I could not find any audio of Mr. Reyna arguing at the Federal Circuit in recent years. However, I did see that he has argued at least one case there: Asociacion Colombiana de Exportadores de Flores et al. v. U.S., 901 F.2d 1089 (Fed. Cir. 1990).
Here is video of Mr. Reyna at a press conference in 2009 discussing the nomination of Justice Sonia Sotomayor to the US Supreme Court: