50 Cent and headphone company Sleek were both involved a lawsuit earlier this year. In the case, 50 claimed that Sleek owed him $260,000, but the company denied it. Once the denial was formalized, the two parties went to arbitration, however, the arbitrator sided with Sleek. Despite the decision, 50 plans to take the case to federal court for an appeal and is also crying foul. Hit the jump for more info.